supply of supply of sensing cum actuation device, with temperature range of 68 to 72 degree c. , supply of sensing cum actuation device, with temperature range of 68 to 72 degree c, mode l no, tad-in. make, pyrogen, lhb ac and sgac coaches, pyrogen make aerosol based fire detection & sup pression system., review of temperature range issued by railway board, rly board letter enclosed, existi ng bulb thermal actuator/thermal head having action temperature as 68-72 degree c to be replaced with respective oems. note : oem , test, guarantee , warranty , authorized dealership certificate to accompany at the time of supply . note : released sensing actuation divice returned by firm . released temperature s ensors are to be returned to firm as buyback option. [ warranty period: 30 months after the date of deliv ery ] ]