Product Info + Installation

Water Heater Watchdog

Model OPD350

Designed for ease of use and peace of mind.

$379.00 $249.00

  • Water Monitoring and WiFi Notification System
  • Pumps up to 340 GPH
  • Prevents flooding by pumping fluid to a safe place
  • Alerts via a free mobile app when fluid is detected
  • A/C power adapter [no batteries needed]
  • DIY installation [pan not included]
  • 5 year limited warranty
  • FCC and UL approved.
  • Made in the USA
  • Patent Pending

Additional information

Weight 2 lbs
Dimensions 10 × 5 × 5 in

What’s In the Box

  • High-Density Polyethylene (HDPE) reservoir with pump
  • Two 1″ Rubber Washers
  • One 1″ NPT Locknut
  • One Power Supply
  • 20′ of 1/2″ ID Vinyl Hose


1.    Remove locknut and one rubber washer from threaded nipple leaving one rubber washer on the threads.

2.    Put the sensor wire through the water heater pan hole located on the side of the water heater pan.

3.    Put the threaded nipple through the same hole.

4.    Put the sensor wire through the rubber washer and then the locknut and fasten the locknut onto the threads. After hand tight, turn locknut ¼ turn with a wrench. Do NOT over-tighten.

5.    Remove backing from under the sensor wire to expose the sticky pad.

6.    Press the sticky side down onto the floor of the pan.

7.    Plug the power supply into the opening on the side of the pump.

8.    Plug the power supply into the GFCI wall receptacle.

9.    Press the test button on the top of the device.

a.  Both red and green lights will go on, the alarm and pump will start for a second, and then go off.
b. The red light will go out leaving only the green (ready) light on.

10. YOUR OPD350 IS READY TO WORK, NOW YOU MUST INSTALL and setup The Kevlyn Pumps mobile app.

11. Hold down the test button for 5 second to clear the processors memory and router setup information. Red and Green lights will both flash when complete.


Don’t forget to test the pump at least once every six (6) months. Kevlyn Pumps will send you a reminder on your phone.  

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