The 24HR FLUSH MNT W/BAT BU 24V W/MNL OR The MIL72 24-Hour timer modules are designed to be mounted inside a control panel and can accommodate flush mounting. The time switches are light-duty commercial switches ideal for 24 VAC single phase applications, such as lighting control, HVACR, pumps, motors, fan controls, access controls, OEM applications, agricultural facilities, and general purpose electrical circuits.