Brand name: Lenrit

Product type:self powered doorbell

Transmitter: no battery required  working temperature:-40℃-60℃Totally waterproof

Receiver: state standard voltage 220v plug-in design  power consumption: standy 0.3w  ringing:0.9w

Working Frequency: wireless

Learning mode: intelligent coding

Ringtone: 38 ringtones, 85db within 1 meter  3 level volume adjustment

Coler: white

Pair mode: one to many and many to one

Transmitter service life: 20 years,say 20 times per day or pressing in total 100 thousand times Installation method: button fixed by two side sticker or screw, receiver plugged into outlet

Application area: any section of your home, workplace,hospital, retail store, business and so on or used as beeper device for old people