To demonstrate the connection of fire-alarm along with cable, sensors and symbolic display ( do’s and don’ts ) and maintenance.
The single board trainer with in built I.C. regulated + 12V Power supply, fire alarm circuit using Transistors, Relay, buzzer and switches, LDR used as sensor and its illuminated by LED fitted in a metal casing. In presence of fire, smoke produce and its interrupt the light beam. The transistorized alarm system on and acknowledge and reset by a push switch.