Item Type: Automatic Chicken Coop Door ControllerMaterial: ABSWeight: Approx. 938g/33.1ozInput: AC 100 to 240V, 50Hz 60HzOutput: DC 9V 2AProduct Size: Approx. 12.5x12.5x9cm/4.9x4.9x3.5inVoltage: 100 to 240VControl Function: Light sense, timing, remote controlWaterproof Class: IP44Battery Box (Not Included): AA battery x4 (battery box battery: rechargeable battery is recommended so that it can be reused and environmentally friendly)Note: The service life of ordinary AA batteries is about 9 months (depending on what brand of batteries customers use to measure the service time).Remote Control Battery: 1 x 27A12V battery (not included)Remote Control Installation Once Battery Life: 1 yearPower Supply Mode: Choose either power supply or battery. It is not recommended to put the battery when using the power supply to avoid battery leakage after a long time.Whether to Automatically Save the Preset Time after Power Failure: NoApplicable Object: Chicken, duck, goose