TWIN DT and TWIN WS DT are the new curtain sensors in dual technology (2 PIR + 1 MW) with double anti masking and accelerometer.
Thay are Weather resistants and ideal for protecting small spaces including the interspace between doors and windows, rolling blinds and shutters.
TWIN DT is the wired version, TWIN WS DT is the self-powered version compatible with any radio transmitter that can be installed inside.