The Wet Switch is a solid state device designed to detect the presence of condensate water overflow. The Wet Switch is placed into the secondary drain pan – a normally dry pan. If the primary drain pan fails, condensate water will overflow into the secondary drain pan. Upon sensing moisture, the Wet Switch will turn the system off (typically the cause of the condensing water) to help prevent damage to carpets, walls, woodwork, ceilings, and other property. The industry standard control voltage for residential air conditioning and heating systems is 24VAC. The Wet Switch uses this standard 24VAC voltage level. A double throw relay incorporates isolated contacts for both system cut-off and alarm operation. Isolation allows use with “electronic” controls where connection to the thermostat circuit is not possible. The double throw relay also allows the Wet Switch to be used in non-HVAC applications
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