Self Powered Doorbell Set with 38 Melodies Strong Penetration Adjustable Volume Multipurpose for Home Apartment Office School Hospital (US Plug)

Specification:Item Type: doorbellMaterial: ABSWorking Voltage: AC 100V-230V 50/60HzOperating Frequency: 433.92MHzStandby Power Consumption: 0.25WMusic: 38Volume: 3 levels and muteControllable Volume: ≥50dB/1mReceiving Distance: ≥150 meters (unobstructed in open space)Receiver Working Temperature: -10℃-+45℃Transmitter Operating Temperature: -20℃-+60℃Receiver Size: 78 x 54 x 20mm/ 3.07 x 2.13 x 0.79inTransmitter Size: 66 x 40 x 20mm/ 2.6 x 1.58 x 0.79inThe transmitter does not need a battery, it is self generated by pressingPackage List:2 x Doorbell2 x Receiver2 x StickerNote:1. The remote control distance is affected by the use environment, and the distance will vary due to different use environments.2. When using electronic products, you should avoid strong interference sources such as metal covers, large electronic equipment, and electromagnetic fields, so as to avoid the remote control and receiver from not working properly.3. Do not use this electronic product abnormally. Abnormal use will reduce the performance and life of the product. In severe cases, it will damage the product and bring dangers to your safety.

• [WIDE APPLICATION] Two doorbell transmitters and two receivers, suitable for homes, apartments, offices, schools, hospitals, and more.
• [SELF GENERATING] No need to change batteries, the doorbell converts energy into electrical energy.
• [STRONG PENETRATION] 433.92MHz can penetrate 3-4 doors, with a receiving distance of up to 150 meters in open areas.
• [ADJUSTABLE MELODIES AND VOLUME] Switch between 38 ringtones, adjust volume levels, and set silent mode for different scenarios.
• [MULTIPURPOSE] Not just a doorbell, it can also function as a siren, for emergencies and suitable for elderly, babies, pregnant women, and patients who sleep alone.