Any of our water based controllers, the neoStat V2, the Touch V2, Edge, Slimline V4 or neoStat WIFI can be used as a time clock for an Immersion heater.
However a contactor or a solid state relay would need to be fitted as the maximum load for our controllers is 3A and an Immersion can be up to 20A
Failing to fit a contactor can cause damage to the Heatmiser controller.
It is not recommended to use one of our electric based models as it can cause them to run hot.