This is an Intermatic Electro-Mechanical 24-Hour Panel Mount Timer Module, With Override, 120 Volts, SPDT. This Timer Module has 21 amps, a real-time clock face and captive trippers. The captive trippers have 15 minute intervals.
The FM1 series timer modules are designed to be integrated inside of a machine control panel, circuit board, or other equipment. They are a simple and low cost alternative for applications that do not require more than 21 Amps or 2 HP, 240 VAC. This FM1 is designed for 24-hour control or overriding a functional typical state of a heating, ventilation, refrigeration, lighting, security, or pump system. The FM1 series is ideal for 12, 24 VAC/VDC, 120 or 208/240VAC single-phase general applications.