Simon Water / Electrical Heating Thermostat is a Z-Wave Plus™ enabled device for indoor temperature control. 1000581X-13X is mainly applied to control wall mounted boiler, water valve/pump etc. , while 1000581X-13X is for electrical heating system. The device is of high reliability and practicability, which can be included and operated in any Z-Wave™ network with other Z-Wave™ certified devices from any other manufacturers. All non-battery operated nodes within the network will act as repeaters regardless of vendor to increase reliability of the network