Home Long Distance Wireless Smart Doorbell Aroma Diffuser the receiver can last for

the receiver can last for more than 7 days of standby time

but in some cases

Filler: Cotton

if the alarm is triggered

Home Long Distance Wireless Smart Doorbell Aroma Diffuser the receiver can last forProduct information: Power supply mode: ac Power supply voltage: 1000 200 (V) Ringtones: 61 types Scope of application: 100 meters (open area) Type: wireless doorbell Product specifications: wireless doorbell (1 button + 1 ring) Product color: matte white Product specifications: one for one (1 transmitter + 1 receiver) Working temperature: 30C to +65C Working frequency: 433. 92MHz+ 75KHz Receiver voltage: 110 240V 50 60Hz (wide voltage) Transmitter