supply of solid state temperature controller etc. , solid state temperature controller (electronic thermostat) suitable for following setting:-( 1)for winter, cut in 19 deg c, cut off 21 deg c.(2)for summer: cut in 25 deg c, cut off 23 deg c as per rdso specification no. rdso/pe/spec/ac/ 0020-2000 (rev-o)with amendt. no.1, 2 & 3. the unit to this specification should be guaranteed against manufacturing/design defects for a period of 12 (twelve) m onths from the date of commissioning. [ warranty period: 18 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]