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FAQ

Emergency lights turn off electricity and unexpected power outages, how emergency principle?
The emergency lights should also have a manual switch, in series with the relay normally closed contact, turn off the manual switch, emergency lights will be closed.
Where's the fire line coming from?. Installation of fire emergency lights, there is a line of fire line, I do not know what the fire line is
current events, after the box linkage, live, forced lighting emergency lighting.
What's wrong with the emergency lights?
You just press him to cancel the alarm, and if so
Code for installation of emergency lights
According to the building design code for fire protection and the code for fire protection design of high-rise civil buildings, the installation location of fire emergency lighting should be in the following parts of the building:
How many W bulbs are used in emergency lights?
battery life: more than four years (or 500 charge and discharge); emergency time: 90mih (special note need); power: 20W.
Why does the emergency light appear when the power supply is normal?
When the mains power supply, the external power supply by D9 make the D7 reverse cut-off, Q5 can not be connected, keys K and G can not control the light Ll, L2 on and off.
Please describe the working principle and function of the safety exit sign and emergency light
Emergency lighting system with built-in power independent control type, normal power received from the general lighting power supply circuit, usually corresponding emergency light battery, when the power is cut off, the standby power supply automatic power supply (battery).
Should emergency lights be used in electrical construction drawings?
illumination than do some emergency, the delay switch is to control the light source