Door viewers, also called peepholes, consist of a lens and cylinder which is inserted into a door, allowing a view outside. The amount of visibility is determined by the degree of the lens; the higher the number, the greater the visibility. This door viewer is and made of material to provide you a good view to protect your security. Featrues - Color: As shown. - Material: Metal. - Size: 50 x 2.2 x2.2 cm. - Easy to install and easy to operate. - and high quality, not easy to be destroyed. - Home Security to protect you property. - Small and light weight. Lower power consumption. - Microcamera help you record the surroundings. Specification - sensor: 1/3 PC1089. - Voltage: 8-9V. - Pixel PAL: 628(H) x 582(V). - NTSC: 428(H) X 320(V). - Signal system: PAL/NTSC. - Electronic Shutter: 1/50(1/60)-1/100,000(s). - Horizontal resolution: 800 Lines. - Minimum illumination: 1.5Lux/F1.2(IR). - White balance: Auto tracing white balance. - Synchronizing system: lnternal. - S/N Ratio: 48 dB. - Video Output: 1.0Vp-p, 75 Omega;. - Power requirement: DC8-12V, lt;5000mA. - AGC: AUTO - BLC: AUTO - Working temperature: -20 C~+60 C