Camere supraveghere IP

Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD1T83G2-LIUF(4MM), lentila fixa: 4mm, iluminare: Color: 0.01 Lux @ (F2.0, AG
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD1T83G2-LIUF(4MM), lentila fixa: 4mm, iluminare: Color: 0.01 Lux @ (F2.0, AG
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD1T83G2-LIUF(4MM), lentila fixa: 4mm, iluminare: Color: 0.01 Lux @ (F2.0, AGC ON),B/W: 0 Lux cu IR: 50m, microfon incorporat, slot card e memorie: microSD/microSDHC/microSDXC card, up to 512 GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.54 A, max. 6.5 W,Ø5.5 mm coaxial power plug, protectie: IP67, dimensiuni: 83.7 mm × 80.7 mm × 205.6 mm, greutate: 635g, temperatura de functionare: -30 °C to 60 °C.
485,22 lei
Camera de supraveghere Hikvision DS-2CD1083G2-LIUF(2.8MM)311324098 8MP Senzor:CMOS de scanare progresivă de 1/2,7" Rezoluti HIK
Camera de supraveghere Hikvision DS-2CD1083G2-LIUF(2.8MM)311324098 8MP Senzor:CMOS de scanare progresivă de 1/2,7" Rezoluti
Camera de supraveghere Hikvision DS-2CD1083G2-LIUF(2.8MM);311324098 ; 8MP; Senzor:CMOS de scanare progresivă de 1/2,7"; Rezolutie:3840 × 2160; Iluminare: Culoare: 0,01 Lux @ (F2.0, AGC ON), alb/negru: 0Lux cu IR; Lnetila: 2.8MM FOV orizontal 113°, FOV vertical 62°, FOV diagonală 134°; Compresie video:H.265+;microfon incorporat, slot card de memorie: microSD/microSDHC/microSDXC card, up to 512 GB, Evenimente: Motion detection (support alarm triggering by specified target types(human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.41 A, max. 5 W,Ø5.5 mm coaxial power plug, protectie: IP67, dimensiuni: 170.8 mm × 66 mm × 69.1 mm, greutate: 285g, temperatura de functionare: -30 °C to 60 °C.
441,17 lei
Camera supraveghere IP DS-2XS2T47G1-LDH/4G/C18S40 4 MP ColorVu Solar- powered Security Camera Setup 1/3" Progressive Scan CMOS,
Camera supraveghere IP DS-2XS2T47G1-LDH/4G/C18S40 4 MP ColorVu Solar- powered Security Camera Setup 1/3" Progressive Scan CMOS,
Camera supraveghere IP DS-2XS2T47G1-LDH/4G/C18S40 4 MP ColorVu Solar- powered Security Camera Setup 1/3" Progressive Scan CMOS, Color: 0.0005 Lux @ (F1.0, AGC ON), 0 Lux with light, Resolution 2560 ×1440,Supplement Light Range: up to 30 m, proactive mode: up to 10 m, SNR ≥ 52 dB, Image Enhancement BLC, HLC, 3D DNR, Ethernet Interface 1 RJ45 10 M/100 M self- adaptive Ethernet port,Operating Conditions:-20 °C to 50 °C,Dimension 679 mm × 443 mm × 760 mm, Weight 11.570 kg.
10.461,35 lei
Camera supraveghere Hikvision IP mini dome DS-2DE2C200MW-DE(F0)(S7) 2.8mm, 2MP, IR 30M, Microfon încorporat pentru securitate au
Camera supraveghere Hikvision IP mini dome DS-2DE2C200MW-DE(F0)(S7) 2.8mm, 2MP, IR 30M, Microfon încorporat pentru securitate au
Camera supraveghere Hikvision IP mini dome DS-2DE2C200MW-DE(F0)(S7) 2.8mm, 2MP, IR 30M, Microfon încorporat pentru securitate audio in timp real, SENZOR: 1/2.7″ Progressive Scan CMOS, rezolutie: 1920 x 1080@ 30fps, iluminare: Color: 0.01 Lux @ (F2.0, AGC ON) , B/W: 0 Lux with IR, lentila: 2.8-4mm,distranta IR: 30m, Digital WDR, BLC, HLC, 3D DNR, 1 RJ45 10 M/100 M self-adaptive Ethernet port, Built-in memory card slot, support microSD/SDHC/SDXC card, up to 256 GB, protective: IP66, putere: 12 VDC ± 25%, 0.75 A, max. 9 W, Ø 5.5 mm coaxial power plug, reverse polarity protection PoE, dimensiuni: 162 mm × 120 mm × 234.2 mm, tempreatura de functionare: -30C to 40C, dimensiuni: 700g.
445,14 lei
Camera supraveghere Hikvision IP dome DS-2CD2163G2-IU(2.8mm), 6MP, AcuSens - filtrarea alarmelor false dupa corpul uman si masin
Camera supraveghere Hikvision IP dome DS-2CD2163G2-IU(2.8mm), 6MP, AcuSens - filtrarea alarmelor false dupa corpul uman si masin
Camera supraveghere Hikvision IP dome DS-2CD2163G2-IU(2.8mm), 6MP, AcuSens - filtrarea alarmelor false dupa corpul uman si masini, microfon audion incorporat, senzor 1/2.8" Progressive Scan CMOS, rezolutie 3200 × 1800@20fps, iluminare Color: 0.005 Lux @ (F1.6, AGC ON), B/W: 0 Lux cu IR, lentila 2.8mm, distanta IR 30m, 120 dB true WDR/IR cut filter/BLC/HLC/3D DNR, Smart feature: face detection, line crossing detection, intrusion detection, human and vehicle targets classification, triple stream, compresie H.265+, slot microSD/SDHC/SDXC pana la 256 GB, interfata retea 1 RJ45 10 M/100 M self-adaptive, alimentare 12 VDC si PoE, IP67, IK10, temperatura de functionare -30 °C la 60 °C, dimensiuni Ø 121.4 mm × 92.2 mm, greutate 550 g. Accesorii optionale: DS-1272ZJ-120, DS-1280ZJ-DM46, DS-1275ZJ-SUS, DS-1271ZJ-120, DS-1272ZJ-120B, DS-1276ZJ-SUS, DS-1253ZJ-M
591,16 lei
Camera de supraveghere IP dome DS-2CD1153G0-I( 2.8MM)C , 5MP rezolutie: 2560 x 1944 luminare: 0.01 Lux@(F2.0, AGC ON), 0 Lux wi
Camera de supraveghere IP dome DS-2CD1153G0-I( 2.8MM)C , 5MP rezolutie: 2560 x 1944 luminare: 0.01 Lux@(F2.0, AGC ON), 0 Lux wi
Camera de supraveghere IP dome DS-2CD1153G0-I( 2.8MM)C , 5MP; rezolutie: 2560 x 1944 luminare: 0.01 Lux@(F2.0, AGC ON), 0 Lux with IR, lentila: 2.8mm, unghi vizulaizare: horizontal FOV: 98°, vertical FOV:71.7°, diagonal FOV:127.0°, distanta IR: 30M, rezolutie : 2560 x 1944, Angle Adjustment Pan: 0° to 360°, tilt: 0° to 75, Wide Dynamic Range 120 dB, Ptotectie: 67 IP; Dimensiuni: Ø 110.8 mm × 84.7 mm ;Temperatura de functionare: -30 °C to 60 °C; greutate:0.520 Kg.
363,75 lei
Camera supraveghere Hikvision IP bullet DS-2CD2T87G2-L(2.8mm)C, 8MP, ColorVu - imagini color 24/7 (color si pe timp de noapte),
Camera supraveghere Hikvision IP bullet DS-2CD2T87G2-L(2.8mm)C, 8MP, ColorVu - imagini color 24/7 (color si pe timp de noapte),
Camera supraveghere Hikvision IP bullet DS-2CD2T87G2-L(2.8mm)C, 8MP, ColorVu - imagini color 24/7 (color si pe timp de noapte), filtrarea alarmelor false dupa corpul uman si masini, senzor: 1/1.2″ Progressive Scan CMOS, rezolutie: 3840 × 2160@25fps, iluminare: 0.0005 Lux @ (F1.0, AGC ON), 0 Lux cu lumina alba, lentila: 2.8mm, distanta iluminare: 60m, 130 dB WDR/BLC/HLC/ 3D DNR, Smart features: Face capture, Line crossing detection, intrusion detection, region entrance detection, region exiting detection, Scene change detection, Motion detection (human and vehicle), compresie: H.265+, Triple streams, slot micro SD/SDHC/SDXC pana la 256 GB, interfata retea: 1 RJ45 10 M/100 M self-adaptive, alimentare: 12 VDC si PoE, IP67, temperatura de functionare: -30 °C la 60 °C, dimensiuni: Ø105 × 289.5 mm, greutate: 1190 g. Accesorii optionale: DS-1280ZJ-S, DS-1275ZJ-S-SUS, DS-1260ZJ
1.285,53 lei
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD2087G2H-LIU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD2087G2H-LIU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD2087G2H-LIU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F1.0, AGC ON),0 Lux cu lumina alba: 40m, microfon incorporat, slot card de memorie: microSD/microSDHC/microSDXC card, up to 512 GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.58 A, max. 7 W,Ø5.5 mm coaxial power plug,reverse polarity protection, PoE: IEEE 802.3af, Class 3, max. 8.5 W, protectie: IP67, dimensiuni: Ø74.4 mm × 179.2 mm, greutate: 525g, temperatura de functionare: -30 °C to 60 °C.
1.083,23 lei
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD2047G2H-LIU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD2047G2H-LIU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD2047G2H-LIU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F1.0, AGC ON),0 Lux cu lumina alba: 40m, microfon incorporat, slot card de memorie: microSD/microSDHC/microSDXC card, up to 512 GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.45 A, max. 5.5 W,Ø5.5 mm coaxial power plug,reverse polarity protection, PoE: IEEE 802.3af, Class 3, max. 7 W, protectie: IP67, dimensiuni: Ø74.4 mm × 179.2 mm, greutate: 525g, temperatura de functionare: -30 °C to 60 °C.
715,30 lei
Camera de supraveghere IP Dome 8MP Hikvision DS-2CD2187G2H-LISU(4MM) (EF), lentila fixa 4mm, iluminare min: Color: 0.0005 Lux @
Camera de supraveghere IP Dome 8MP Hikvision DS-2CD2187G2H-LISU(4MM) (EF), lentila fixa 4mm, iluminare min: Color: 0.0005 Lux @
Camera de supraveghere IP Dome 8MP Hikvision DS-2CD2187G2H-LISU(4MM) (EF), lentila fixa 4mm, iluminare min: Color: 0.0005 Lux @ (F1.0, AGC ON), 0 Lux cu lumina alba: 30m, IR 30m, microfon incorporat, interfata audio: 1/1, alarma: 1/1, slot card de memorie: microSD/microSDHC/microSDXC maxim 512GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.6 A, max. 7.2 W, Ø 5.5 mm coaxial power plug, protectie: IP67, dimensiuni: Ø121.5 mm × 97.6 mm, greutate: 525g, temperatura de functionare: -30 °C to 60 °C.
1.083,23 lei
Camera de supraveghere IP Dome 4MP Hikvision DS-2CD2147G2H-LISU(4MM) (EF), lentila fixa 4mm, iluminare min: Color: 0.0005 Lux @
Camera de supraveghere IP Dome 4MP Hikvision DS-2CD2147G2H-LISU(4MM) (EF), lentila fixa 4mm, iluminare min: Color: 0.0005 Lux @
Camera de supraveghere IP Dome 4MP Hikvision DS-2CD2147G2H-LISU(4MM) (EF), lentila fixa 4mm, iluminare min: Color: 0.0005 Lux @ (F1.0, AGC ON), 0 Lux cu lumina alba: 30m, IR 30m, microfon incorporat, interfata audio: 1/1, alarma: 1/1, slot card de memorie: microSD/microSDHC/microSDXC maxim 512GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.6 A, max. 7.2 W, Ø 5.5 mm coaxial power plug, protectie: IP67, dimensiuni: Ø121.5 mm × 97.6 mm, greutate: 525g, temperatura de functionare: -30 °C to 60 °C.
715,30 lei
Camera de supraveghere IP Bullet 8MP Hikkvision DS-2CD2087G2H- LIU/SL(4MM)(EF), lentila fixa: 4mm, iluminare min.: Color: 0.0008
Camera de supraveghere IP Bullet 8MP Hikkvision DS-2CD2087G2H- LIU/SL(4MM)(EF), lentila fixa: 4mm, iluminare min.: Color: 0.0008
Camera de supraveghere IP Bullet 8MP Hikkvision DS-2CD2087G2H- LIU/SL(4MM)(EF), lentila fixa: 4mm, iluminare min.: Color: 0.0008 Lux @ (F1.0, AGC ON),0 Lux cu IR: 40m, microfon incorporat, difuzor incorporat, slot card de memorie: microSD/microSDHC/microSDXC card, up to 512 GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.7 A, max. 8.5 W,Ø5.5 mm, PoE: IEEE 802.3af, Class 3, max. 10 W, protectie: IP67, dimensiuni: Ø74.4 mm × 179.2 mm, greutate: 510g, temperatura de functionare: -30 °C to 60 °C.
1.137,33 lei
Camera de supraveghere Hikvsion Bullet DS-2CD2047G2H-LIU/SL(4MM)(EF) lentila fixa: 4mm, 2688 × 1520, iluminare: Color: 0.0005 L
Camera de supraveghere Hikvsion Bullet DS-2CD2047G2H-LIU/SL(4MM)(EF) lentila fixa: 4mm, 2688 × 1520, iluminare: Color: 0.0005 L
Camera de supraveghere Hikvsion Bullet DS-2CD2047G2H-LIU/SL(4MM)(EF); lentila fixa: 4mm, 2688 × 1520, iluminare: Color: 0.0005 Lux @ (F1.0, AGC ON), 0 Lux, IR 40M, alimentare: 12 VDC ± 25%, 0.54 A, max.6.5 W, Ø 5.5 mm coaxial power plug, reverse polarity rotection, PoE: IEEE 802.3af, Class 3, max. 8 W, protectie: IP67, dimensiuni: Ø 74.4 mm × 179.2 mm, greutate: 510g, temperatura de functionare: -30 °C to 60 °C.
750,97 lei
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD2086G2H-IU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F1
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD2086G2H-IU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F1
Camera de supraveghere IP Bullet 8MP Hikvision DS-2CD2086G2H-IU(4MM) (EF), lentila fixa: 4mm, iluminare: Color: 0.0005 Lux @ (F1.0, AGC ON),0 Lux cu lumina alba: 40m, microfon incorporat, slot card de memorie: microSD/microSDHC/microSDXC card, up to 512 GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.45 A, max. 5.5 W,Ø5.5 mm coaxial power plug,reverse polarity protection, PoE: IEEE 802.3af, Class 3, max. 7 W, protectie: IP67, dimensiuni: Ø74.4 mm × 179.2 mm, greutate: 525g, temperatura de functionare: -30 °C to 60 °C.
830,71 lei
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD2046G2H-IU(4MM) (EF), lentila fixa: 4mm, iluminare min.: Color: 0.001 Lux @
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD2046G2H-IU(4MM) (EF), lentila fixa: 4mm, iluminare min.: Color: 0.001 Lux @
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD2046G2H-IU(4MM) (EF), lentila fixa: 4mm, iluminare min.: Color: 0.001 Lux @ (F1.0, AGC ON),B/W: 0 Lux cu IR: 40m, microfon incorporat, slot card de memorie: microSD/microSDHC/microSDXC card, pana la 512 GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, Scene change detection, alimentare: 12 VDC ± 25%, 0.45 A, max. 5.5 W,Ø5.5 mm, protectie: IP67, dimensiuni: Ø74.4 mm × 179.2 mm, greutate: 525g, temperatura de functionare: -30 °C to 60 °C.
599,90 lei
Camera de supraveghere IP Dome 6MP ColorVu with Smart Hybrid Light Hikvision DS-2CD1167G2H-LIU(4MM), lentila fixa: 4mm, iluminar
Camera de supraveghere IP Dome 6MP ColorVu with Smart Hybrid Light Hikvision DS-2CD1167G2H-LIU(4MM), lentila fixa: 4mm, iluminar
Camera de supraveghere IP Dome 6MP ColorVu with Smart Hybrid Light Hikvision DS-2CD1167G2H-LIU(4MM), lentila fixa: 4mm, iluminare min.: Color: 0.001 Lux @ (F1.0, AGC ON),B/W: 0 Lux cu IR: 30m, microfon incorporat, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.5 A, max. 6 W,Ø5.5 mm, PoE: IEEE 802.3af, Class 3, max. 7.5 W, protectie: IP67, dimensiuni: Ø121.5 mm × 97.6 mm, greutate: 550g, temperatura de functionare: -30 °C to 60 °C.
510,28 lei
Camera de supraveghere IP Dome 2MP ColorVu with Smart Hybrid Light Hikvision DS-2CD1127G2H-LIU(4MM), lentila fixa: 4mm, iluminar
Camera de supraveghere IP Dome 2MP ColorVu with Smart Hybrid Light Hikvision DS-2CD1127G2H-LIU(4MM), lentila fixa: 4mm, iluminar
Camera de supraveghere IP Dome 2MP ColorVu with Smart Hybrid Light Hikvision DS-2CD1127G2H-LIU(4MM), lentila fixa: 4mm, iluminare min.: Color: 0.001 Lux @ (F1.0, AGC ON),B/W: 0 Lux cu IR: 30m, microfon incorporat, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.5 A, max. 6 W,Ø5.5 mm, PoE: IEEE 802.3af, Class 3, max. 7.5 W, protectie: IP67, dimensiuni: Ø121.5 mm × 97.6 mm, greutate: 550g, temperatura de functionare: -30 °C to 60 °C.
316,38 lei
Camera de supraveghere Hikvision DS-2CD1083G2-LIUF(4MM) 8MP Senzor:CMOS de scanare progresivă de 1/2,7" Rezolutie:3840 × 2160 HI
Camera de supraveghere Hikvision DS-2CD1083G2-LIUF(4MM) 8MP Senzor:CMOS de scanare progresivă de 1/2,7" Rezolutie:3840 × 2160
Camera de supraveghere Hikvision DS-2CD1083G2-LIUF(4MM); 8MP; Senzor:CMOS de scanare progresivă de 1/2,7"; Rezolutie:3840 × 2160; Iluminare: Culoare: 0,01 Lux @ (F2.0, AGC ON), alb/negru: 0Lux cu IR; Lnetila: 4MM FOV orizontal 113°, FOV vertical 62°, FOV diagonală 134°; Compresie video:H.265+;microfon incorporat, slot card de memorie: microSD/microSDHC/microSDXC card, up to 512 GB, Evenimente: Motion detection (support alarm triggering by specified target types(human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.41 A, max. 5 W,Ø5.5 mm coaxial power plug, protectie: IP67, dimensiuni: 170.8 mm × 66 mm × 69.1 mm, greutate: 285g, temperatura de functionare: -30 °C to 60 °C.
441,17 lei
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD1T43G2-LIUF(4MM), lentila fixa: 4mm, iluminare: Color: 0.01 Lux @ (F2.0, AG
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD1T43G2-LIUF(4MM), lentila fixa: 4mm, iluminare: Color: 0.01 Lux @ (F2.0, AG
Camera de supraveghere IP Bullet 4MP Hikvision DS-2CD1T43G2-LIUF(4MM), lentila fixa: 4mm, iluminare: Color: 0.01 Lux @ (F2.0, AGC ON),B/W: 0 Lux cu IR: 50m, microfon incorporat, slot card e memorie: microSD/microSDHC/microSDXC card, up to 512 GB, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.54 A, max. 6.5 W,Ø5.5 mm coaxial power plug, protectie: IP67, dimensiuni: 83.7 mm × 80.7 mm × 205.6 mm, greutate: 635g, temperatura de functionare: -30 °C to 60 °C.
454,75 lei
Camera de supraveghere IP Bullet 2MP ColorVu Hikvision DS-2CD1T27G2H- LIU(4MM), lentila fixa 4mm, iluminare: Color: 0.001 Lux @
Camera de supraveghere IP Bullet 2MP ColorVu Hikvision DS-2CD1T27G2H- LIU(4MM), lentila fixa 4mm, iluminare: Color: 0.001 Lux @
Camera de supraveghere IP Bullet 2MP ColorVu Hikvision DS-2CD1T27G2H- LIU(4MM), lentila fixa 4mm, iluminare: Color: 0.001 Lux @ (F1.0, AGC ON),B/W: 0 Lux with IR: 50m, microfon incorporat, interfata: 1 x RJ45 10 M/100 M self-adaptive Ethernet port, alarma la evenimente: Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception, alimentare: 12 VDC ± 25%, 0.6 A, max. 7.2 W,Ø5.5 mm coaxial power plug,reverse polarity protection, PoE: IEEE 802.3af, Class 3, max. 8.7 W, protectie: IP67, dimensiuni: 81 mm × 83.7 mm × 201.96 mm, greutate: 550g, temperatura de functionare: -30 °C to 60 °C.
358,41 lei