Replacement pool timer trippers designed to restore reliable on and off switching for compatible mechanical time switches. These replacements are made from upgraded materials that resist corrosion and rust, delivering a durable solution when original trippers are missing or broken. Key benefits Restores automatic timer control: Replaces missing or damaged ON and OFF trippers so pool pumps, lights, or other timed equipment resume scheduled operation. Durable construction: Upgraded, corrosion resistant material reduces risk of rust and extends service life in outdoor and wet environments. Simple installation: Includes one silver ON tripper and one gold OFF tripper. Remove the existing screw, position the tripper on the timer dial, and secure it with the screw for fast setup. What is included 1 silver ON tripper 1 gold OFF tripper Compatibility Compatible with Intermatic T100 series and time clocks, including models: 156T1978A, 1A219, 1A220, 1A573, 1A850, 2A208, 2A209, 2EO21, 2EO23, 2EO22, 2E214, 2EO25, 2E25, 3E25, 35E3, 4EO24, 4EO26, 4EO25, 6X757, 6X759, 6X760, 6X768, 6X767, 6X769, T101, T102, T103, T104, 10220, 10420, T101R, T101M, T104M, T104R. Please confirm your timer model number before . Installation notes Tools required: screwdriver to remove and reinstall the mounting screw. Placement: Position the ON tripper where you want the timer to close the circuit and the OFF tripper where you want it to open. No wiring changes needed; this is a mechanical replacement for the timer dial. Typical applications a broken tripper on a backyard pool pump timer to restore automatic pump cycles. Reinstall trippers on a spa or hot tub time switch to regain scheduled heating or circulation. a timer controlling pool lights or small outdoor pumps without replacing the entire time switch. Durable, easy to install, and compatible with a wide range of T100 style time clocks, these replacement trippers provide a straightforward way to maintain scheduled operation of pool and outdoor equipment.