Smoke damper:

DC24V electrical signal can be quickly opened the valve.
Manual open, output signal, chain smoke exhaust fan. Manual reset.
PY-02YSD exhaust valve can be opened manually to remote control, remote control manual reset.
Parameters:
The electric current / voltage: DC24V/0.7A
Flow volume: 290m³ /h~m³
(standard) A steel cable length &le PY-BSD remote control exhaust valve; 6M