Features: Combines many functions in one: two-way intercom， surveillance， wireless unlock， hands free call and talk， etc. 2.4GHz digital frequency hopping， with strong anti-interference ability， and barrier-free transmission distance is up to 300 meters. If there are barriers between indoor monitors and outdoor camera， valid transmission distance will be shortened. (After passing through two walls， it can extend 10 meters outside.) 0.3M pixel camera. Outdoor camera with clear IR night vision can monitor and capture images in low-illumination environment. Outdoor camera is designed with a rain shield， which protects it from moisture without influence on its appearance. The outdoor camera is easy to be installed on walls. Indoor monitors can take pictures automatically or by instructions. And it can store up to 130 photos with date and time. 7 inch TFT color display high definition screen with sensitive touch key press control. 16 kinds of different chord melodies for your choices. Time shown on the screen， talk and melody volume， brightness and contrast of images are adjustable. Indoor monitors are portable， and they can be hung on walls or cabinets， or be placed on desks， tea tables， dining tables， etc. Supplied with three BL-5J batteries， which are replaceable and rechargeable. Can be widely used in villas， apartments， houses， hotels， office， public buildings， etc. One outdoor camera can support up to three indoor monitors. Note: This wireless video door phone kit includes one outdoor camera and two indoor monitors. Specifications of indoor units: Screen: 7" TFT LCD Resolution: 960 * 480 Sensitivity: 90dBm Working current: 250mA Standby current: 20-30mA/3.7V Power supplied by: rechargeable lithium battery BL-5J battery Battery capacity: 1320mAh Standby time: 120H Power adapter: input: AC100-240V 50/60Hz output: DC5V， 1000mA Adapter type: US plug Dimensions: 22.5 * 12.8 *2.3cm/ 8.8 * 5.0 * 0.9in Weight: 391g/ 13.8oz Specifications of outdoor unit: Working rate: 2402-2483.5MHz Transmitting power: 16-20dBm Camera: 1/4" CMOS LED: 6 * infrared LED lights Viewing angle: 92 degrees Working current: 300mA Standby current: 20-30mA Power supplied by: rechargeable lithium battery or power adapter Battery: BL-5J battery Battery capacity: 1320mAh Standby time: 2 months Power adapter: input: AC100-240V 50/60Hz output: DC5V， 1000mA Adapter type: US plug Cable length: 1.45m/ 4.75ft Dimensions: 16.5 * 10.9 * 6.5cm/ 6.5 * 4.3 * 2.5in Weight: 315g/ 11.1oz Material: plastic Working temperature: -10 degrees centigrade to +50 degrees centigrade Working humidity: ≤85% Package size: 29 * 25 * 9cm/ 11.4 * 9.8 * 3.5in Package weight: 1725g/ 3.8lbPacking list: 1 * Outdoor camera with a rain shield 2 * Indoor monitors 1 * Power adapter for outdoor camera (US plug) 2 * Power adapter for indoor monitors (US plug) 2 * Mounting plates 3 * BL-5J batteries 1 * 3 pin cable 2 * Bags of screws 1 * User manual