TFBOYS Security Wireless Waterproof Smart Doorbell with 36 Chimes 4-Level Adjustable Volume White Home Alarm Ring Bell for Home Improvement (2 Button + 3 Plugin Receiver)

Description

Features: * unique and elegant style * low-power consumption design, power saved and durable  * Range in open spaces: Max. 200-300m * 36 varied style of tunes for optional * 4 levels adjustable volume Installation Notes: 1.Transmitter:clean the case first and paste the double sticker,then put the transmitter on the wall.In order to make it work properly,the height should be >1.5m. (Warning: please do not install on the metal door/window) 2. Receivers: plug into the socket. Walls and metal objects will shorten the range,and may interfere with its operation(metal fence,door,gate...)furthermore devices using radiofrequency can do the same(computer,microwave oven,television...) 3.The shorter distance (between transmitter and receiver), the signal will be better. Specifications Receiver Working voltage: 90-260V Standby current: 7mA Working current: 60mA Working Frequency: 433MHZ Dimension：10*4.8*5cm Transmitter Working voltage: 12V 12V23A*1pcs Working Frequency: 433MHZ Standby current: 1μA Working current: 12mA Working range: about 200-300m (on open air) Dimension：7*4.5*1.7cm Failure Analysis and Troubleshooting: 1. Doorbell does not ring F: receiver host isn't plugged in or tune mute A: plug into socket or adjust the volume keys F: Transmitter battery positive and negative anti-loaded A: Reinstall the battery F: Transmitter and receiver pair unsuccessful A: Re-pair Package Content: 2 * Button 3 * Receiver 2* Double-Sided Adhesive Tape