Tired of forgetting to turn off the water heater or aquarium light? The CH-899 solves it. Here is how to program it in 4 steps. 👇
📍 Step 1: Master Reset Find the small hole labeled RESET on the side. Use a paperclip to press it. This clears old data so you start fresh. ch-899 chouchin set time
A: Press PROG until you reach the slot number (e.g., 3ON). Press RESET (or hold CLK + PROG depending on the version). Alternatively, set the ON time and OFF time to the same minute --:-- to deactivate that slot. Tired of forgetting to turn off the water
A: The internal battery may be dead. Plug the unit into a live 220V socket for 10 minutes to recharge the backup battery. ch-899 chouchin set time