USB Doorbell - Wireless Home Smart Ultra-long-range Remote Control Doorbell - USB Power Supply - Elderly Call Reminder Device

1. Working Voltage: AC 100-250V 60Hz/50Hz 2. Power consumption: ≤0.5W 3. Operating Frequency: 433.92 MHz 4. Operating temperature: -10°C~+45°C 5. Volume: 25~85dB (3-level volume adjustable) 6. Receiver Size: L43×W32×H41mm Transmitter button parameters 1. Working Voltage: 100-250V 1. Battery Type: 23A 12V 2. Transmitter Size: L80×W45×H21mm Features: Differentially set ringtones: Different buttons set different ringtones, easily distinguish between front and rear doors Built-in 38 level welcome music volume adjustable This doorbell needs no wiring, plug and play, convenient and practical, easy to install The receiver is suitable for direct plug-in, the applicable voltage range is 100-250V 50/60Hz Applicable scenarios: residential, hotel, villa, hospital Function: Learning Code Remote Control Distance: Indoor distance is about 50 meters (without partition), outdoor open space is about 100-300 meters. (This Data is the experimental test distance. The actual distance is affected by the environment and applicable obstacles. The more obstacles, the shorter the distance. The actual distance is subject to the distance of the experimental environment) how to use Packed products are paired before leaving the factory, and do not need to be paired again. To replace transmitters or add transmitters, do the following: Pairing method The receiving outlet plugs into a regular household outlet. When the power is on, (if different transmitters need to match different ringtones, first press the music button to select ringtone), and then press the receiver mode button for about 5 seconds until the indicator light flashes . Enter pairing mode, at this time, press the transmitter, the receiver rings, the pairing is successful. clear code Press and hold the pairing button on the receiver for about 10-13 seconds until the indicator light quickly lights up After flashing, stop flashing, i.e. clear all pairing codes.