3.5-inch high-definition visible electronic doorbell 120-degree wide-angle smart cat eye long standby time domestic monitoringFeatures:Mini open air camera3.5-inch LCD shade screenOV Industrial High Definition Color Image Sensor120 diploma precise viewing angle24 hours tracking Specifications:Type: magic eyeMaterial: Zinc AlloyType: Digital DoorbellLCD screen: 3.5 inch Sensor: 2 Mega CMOS SensorFunction: Energy saving, Low Power AlertPower supply: 4pcs AAA batteries (not included)Door Hole Range: 14-28mmDoor Thickness Range: 35-100mmKeyword: electronic door viewerPower source: 4pcs AAA batteriesdoor gap diameter: 14-28 mmDoor Thickness: 35-100 mmIndoor system size: 120x62x20 mm Diameter (camera outdoors): 30 mmNet weight: 197g Note:1. There may be slight length deviations thanks to guide measurement, various measuring tips and tools.2. The picture might not reflect the particular coloration of the thing due to varied photographing light, attitude and exhibit monitor. package:1 x Outdoor Unit 1 x Indoor Unit3 x Screw1 x Metal bracketFunction operation: Press the ability button to show at the show image, you can word the scene exterior the door in real time during the demonstrate screen, and routinely close down after 15 seconds of energy on. 1. Power on: Press the power button 2. Shutdown: It will mechanically shut down after 15 seconds of power on, and it's going to even be shut down via lengthy urgent the ability button for 3 seconds within the power-on state. Installation diagram and installation instructions: Step 1: Open the screw pack and choose screws of appropriate length in step with the thickness of the door. Screw two screws into the metallic sticking out rods of the open air unit in advance. Step 2: Insert the outdoors unit into the door hole, remove the steel bracket from the again of the major unit, go the cable of the open air unit through the higher slot hole of the metal bracket, cross the screw through the decrease slot hole of the metal bracket, and grasp the metallic bracket at the door at the screw of the exterior mechanical device sticking out rod. (Note: the triangular notch of the door open air unit is upward, and the arrow route of the metal bracket is upward). After checking the route of the door open air unit and the steel bracket, push and pull the metallic bracket to the left in order that the steel bracket is locked by the screw. Then tighten the two screws until the bracket and outdoors unit are securely fastened. Step 3: Open the battery hide of the host, and put the battery into the host (the battery hide has the battery polarity mark). Step 4: Align the 4 slots on the back of the indoor unit with the 4 hooks of the metallic bracket, after which pull down the indoor unit firmly until it is locked. Step 5: Peel off the protecting film at the surface of the indoor and open air units. Installed.