Em-Vent smoke manual control points are easy to install and operate. It is developed to be used together with the Em-Vent smoke control panel system. LEDs show status of system and system can be reset by opening cover. An audible buzzer is also incorporated. Operating instructions During Fire: break the glass and activate the red button. During test: open the cover and activate the red button. Closing and alarm reset: open the cover “ activate the black reset button, alarm is reset and rooflights are closed.