Y-A3-BL transmitter button
it is used for the customer to call
waterproof, built-in antenna,with cancel & call bill function

Feature

Y-A3-BL transmitter button
which is very convenient for patient to call the nurse or doctor to ask for help or for the customer to call in the restaurant,hotel or coffee shop,tea shop etc
with modern appearance,waterproof
with built-in antenna

with three button for three funcion which you can set them yourself.

Transmission distance:300m in open area

Technial Parameter:

Working voltage:DC12V
Working current:<15mA
Transmit Frequency:433MHz±75k
Output power:<20mW
size:  Φ60x17mm