Electric smoke ventilator mainly include five forms: arched shape, linear shape, triangle shape, wind shelter shape, and side opening shape. It is suitable for natural lighting, smoke exhaust and ventilation on the roof of industrial and civil buildings. It is not suitable for high temperature and corrosive buildings. 

1. Triangular electric smoke ventilator and linear natural vent are suitable for buildings that usually use lighting as the mainstay, supplemented by ventilation. The maximum opening angle is 60° to 90°.

2. Wind-shielding smoke exhaust ventilator is suitable for buildings that require ventilation and smoke exhaust in any weather conditions, which can avoid rain and snow. The maximum opening angle is 30°.

3. The arched continuous rooflight is suitable for buildings that need to be opened frequently for ventilation, and its opening angle is 45°.

4. Side-opening smoke vent skylights' maximum opening angle is 45°

Smoke hatch skylight's controls are divided into ordinary control, intelligent control, and intelligent network control. These three control methods all have the function of fire-fighting joint control. For control method, users can negotiate with manufacturer and choose a convenient control method.