supply of solid state temperature controller (electronic thermostat)solid state temperature controller (electronic thermostat),solid state temperature controller (electronic thermostat) suitable for following setting:- (1) for wint er: cut in 19 degree c, cut off 21 deg c. (2) for summer: cut in 25 degree c. cut off 23 degree c as per rds o specification no. rdso/pe/spec/ac/0020 (rev-0) sept 2000 with amendt. no. 1, 2 & 3. [ warranty period: 18 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] workshop carriage stores/kgp, west bengal 19.00 set