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DiversiTech Safety Overflow Switch (SOS)

Designed for use on 3/4” PVC condensate drain line. Snaps easily over existing drain line tubing and can be glued in place
using PVC cement if desired. The SOS works by electronically sensing water near the inside wall of the PVC drain tubing.
By locating the SOS with its body away from the normal flow, it can be used to detect a possible overflow condition when
the PVC drain line becomes full with water. Like a culvert, the condensate drain line is normally mostly empty with a small
amount of water flowing in the lower parts of the horizontal run. Since the sensor component of the SOS only covers part of
the tubing, a low volume of flowing water does not activate the switch. The pipe must be full or near full to activate the
switch. The SOS can be mounted horizontally, vertically, or at any angle.
Works with 24 VAC control circuits and typical contactors. When not detecting water, the SOS is normally closed and allows
normal air conditioner operation. When water approaches the SOS’s sensor, the switch triggers, and the control circuit is
opened. The LED indicator lights to show that there may be system trouble, and the SOS is doing its job.
Furnished complete with switch, 5’ (1.5 meter) 18 AWG, 2 wire lead, and a 3/4” PVC male fitting adapter for direct coupling
to a primary pan drain line connection. Now available with Push to Test button.
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S1-SOS-1
PART #: SOS-1 - SWITCH OVERFLOW
Usually Ships in 2 to 3 Business Days

List Price: $60.93
Our Price: $39.67
Savings: $21.26