RS-4-1S: Upgrades a single-channel unit to read four channels of EGT or CHT. (Specify which type). STC'd and PMA'd. Kit Includes: Unit, 3 ea 8' cables, 3 EGT probes or 3 CHT probes.
RS-4-2S: Upgrades a dual temperature instrument to read four channels of EGT and CHT. STC'd and PMA'd. Kit Includes: 6 ea 8' cables, 3 EGT probes and 3 CHT probes.
