Old man pager, watch emergency button,Wrist watch transmitter, watch type call button, watch type wireless remote control, SOS emergency button, watch type wireless remote control The watch-type emergency button is mainly used in places where emergency assistance is needed. The style is novel, elegant and elegant, easy to carry and simple to use, especially suitable for the elderly. Can be equipped with security alarm host, smart home host. Applicable to nursing homes, hospitals, nursing homes, etc., as well as households. Fit many occasions: Suitable for indoor and outdoor use, such as home, office, bedroom, bathroom, kitchen, living room, etc. watch design, easy to carry and use.the button delay trigger, to avoid false positives.Low power consumption and long battery life. working voltage: DC3V working current: 13mA Working frequency: 433.92MHz Frequency deviation: ±0.2MHz Transmitting power: 10mW Working distance: 10-100m Modulation mode: ASK Working temperature: -20 °C - +70 °C Colour:Photo Color Material:ABS Package Contents: 2x Watch style pager Different batches, different angles and lighting, there are slight differences between the actual product and the picture, which not affect normal use Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.