Feature:1. Efficient Body Sensing: Intelligently recognizes human movements to ensure accurate doorbell sensing and triggering and improve safety.2. Split Design: The equipment is split and can be installed in different locations of the store, more flexibly to provide all round security protection.3. Voice Broadcast: When someone enters, it can remind the owner in time through voice broadcast to increase store security, safe for use.4. Multifunctioal Alarm: In addition to the doorbell function, it can also be used as an alarm to enhance security protection and remind the owner to take measures in time.5. Durable Material: The doorbell is made of premium material, durable and stable, high strength and wear resistant, having long service time.Specification:Item Type: Motion Sensor DoorbellVoltage: US 90-260VMaterial: ABSTransmitter (Each): Battery Type: Lithium Battery, Battery Model: 1.5V AAA lithium battery x 3Receiver Working Current: 60mA, Quiescent Current: 7mAPower: 2WMusic: 36 polyphonic music to choose fromWorking Frequency: 433MHZControllable Volume: 20-80dB (4 levels of volume adjustment options)Remote Control Receiving Distance: 200-300m/656-984ft (open area)Transmitter Operating Frequency: 433MHZTransmitter Working Current: 12mALED Indicator: The transmitter senses people move, the LED indicator light on the transmitter is on, the transmitter is working, and the receiver receives the instruction, and also sends out beautiful music to remind you that there are VIPs visiting, and the LED light on the receiver is also accompanied by The music flickers regularlyWorking Temperature Range: -10-50.Package List:2 x Transmitter1 x Receiver2 x Connector2 x Base4 x Screw4 x Expansion Bolt1 x English InstructionNote:Transmitter is not shipped with battery.