This black FS10-S5R-3-3 ABS UM-4.AAA.R03 remote has buttons that control power, temperature up and down, timer/sleep mode, and more. This is compatible with multiple brands, but is mainly used for a Honeywell heater. The FS10-S5R-3-3 ABS UM-4.AAA.R03 remote uses two AAA batteries.
Includes battery compartment door. Tab is intact.