supply of electronic control unit cum buzzer with dust proof closed design, bolt type terminal 10- , type-ii surge protection on pcb incoming suitable for all cls panel 60a, 150a, and 300a. , electronic control unit cum buzzer with dust proof closed design, bolt type terminal 10-amp, type-ii surge protection on pcb incoming suitable for all cls panel 60a, 150a, and 300a. as per rdso spec fication no. eti/spc/psi/cls/0020 or latest. one sample to be approved before bulk supply. make :- suntron systems, supreme switchgear, eastland switchgear pvt. ltd., control panel systems, prosafe automation or similar. [ warranty period: 30 months after the date of delivery ] ]