Apt Immersion Boiler Time Clock Timer Switch Heating | Imm24ecAPT 24 hour immersion time clock 16. 1 Amp 240 Volt No loose pins Tappet time selectors allow fast, easy fingertip control 24 hour daily versions with programming intervals of 30 minutes 30 minute increment tappets Surface mounting box containing 2x cable clamps 48 switching's per day possible Manual override gives the choice of on, off or clock Terminals which can accommodate 2x 1. 5mm Conductors are provided Indicator light Impact resistant housing