The Long-Range Wireless Switch with Remote Control Fob is designed for use with Intermatic pool and spa panels, Intermatic weatherproof covers, and similar weather-rated NEMA 3R enclosures. Featuring 915 MHz spread spectrum wireless technology, the switch communicates with the included remote control fob at distances up to 400 feet through metal panels, with no external antenna required. The internal components of the Long-Range Wireless Switch have been treated with a special coating to resist oxidation in outdoor environments and supports an operating temperature range of -30° C to 70° C (-22° F to 158° F), while the fob supports an operating temperature range of 0° C to 50° C (32° F to 122° F).