This wireless relay box/receiver is designed for use with Honeywell storage tank water heaters, including models CM921, CM927, CM721, CM727 DT92E. The box is perfect for those who want to replace their old wired relay box, and is compatible with a range of different Honeywell products. The box features a thermostat and is ideal for use in standard water heaters, as well as other heating, cooling and air applications. It is easy to instal and comes with all the necessary accessories, making it the perfect choice for anyone looking to upgrade their home or office heating system.
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