433MHz Wireless Door Bell Electronic Remote Control Smart Emergency Alarm for Old Man

Welcome to our store！</br>1、With comfortable feel, touch the doorbell button to send a signal to the doorbell host, need to be used with the host (not include host). 2、24 hours safe guard, emergency call, need to be used with the host (not include host), every hour to take care of the family, calmly respond to emergencies. 3、Doorbell can be placed everywhere, no wiring, plug and play. Switch between normal mode and fixed mode at will. 4、Multi‑purpose (to be used with the host (not include host)). An emergency caller suitable for the elderly, children, and pregnant women. Just press the doorbell to inform your family. 5、Need to be used with the host (not include host), by connecting to the host, when an accident occurs, you can press the button to notify, can also be set to use as a doorbell. <p class="wang-edit-text"><p class="wang-edit-text"> <p class="wang-edit-text"> <p class="wang-edit-text"> <p class="wang-edit-text">Item Type:&nbsp;Wireless&nbsp;Door&nbsp;Bell Material: ABS Size: Approx. 78 x 45 x 30mm/3.1 x 1.8 x 1.2in Operating Voltage: DC 3V Power Supply: 1 x CR2450 button battery (battery included) Operating Current: 9 - 12mA Working Frequency: 433MHz Transmission Power: 10 - 15MW Launch Range: Approx. 150m/164.0yd(empty) Coding Chip: EV1527 (learning code) Shock Resistance: 330K Number of Keys: 1 Key Modulation Mode: ASK Static Current: 0uA <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Doorbell Button Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>