Features:
Receiver wide voltage input design, 12 30V DC power input.
After the signal is received, it will output the door open signal for 1.5 seconds.
Contact-less sensing by hand or front of reflective objects, clean and sanitary.
The sensing distance is adjustable from 3-30cm, and can be adjusted by itself for different occasions.
https://www.chinaautomaticdoor.com/accessories-for-atuomatic-gate-door-opener/disabled-handwave-switch.html