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WaterCop Flood Prevention Kit (1/2" Pipe)


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WARNING: Cancer and Reproductive Harm –


Monitor For Leaks in 2 Separate Areas and Limit Potential Water Damage

Obtain everything you need to install an automatic flood prevention system at once with the WaterCop Flood Prevention Kit! This kit includes a WaterCop Electric Actuator Motor, two WaterCop Wireless Flood Sensor, 1 Probe, and a WaterCop Water Shut-Off Valve for 1/2” Pipe, Lead Free. The WaterCop Flood Prevention Kit provides your home with round-the-clock indoor leak and flood detection and protection. The system consists of wired and wireless flood sensors, On/Off control switches, and a main control device consisting of an actuator motor and ball valve mounted on your main water line that all work together to detect leaks from your plumbing system or excessive water in selected areas and automatically shut off the water supply to help reduce and/or minimize the chances of major water damage. A WaterCop automatic water shut-off valve system is compatible with most home security and home automation systems via ethernet connection.

  • Actuator Motor receives and responds to trigger signals from wireless flood sensor(s), control switches, and compatible security and automation systems
  • Open/Close valve control buttons allow for on-demand manual operation
  • Color-coded LEDs indicate current valve position
  • Pairs with 418 MHz wireless sensors up to 200 feet away
  • Optionally integrates into a security/automation system via RS232 connections
  • 418 MHz water detection sensor alerts WaterCop Actuator Motor or Interface of detected leaks to paired WaterCop Motor up to 200 feet away
  • Unlimited number of sensors can be paired with a single WaterCop Motor
  • Flood sensor is powered by 2 AA batteries or optional AC adapter (DQWPA, sold separately)
  • 0.5” ⌀ Shut-Off Valve installs on your indoor main water supply line with a WaterCop Actuator Motor or Interface to Open/Close when prompted
  • Shut-Off Valve can be installed at any stage of construction or easily retrofitted to existing plumbing
  • NSF 61 rated valve and complies with Uniform Plumbing Code

The WaterCop Electric Actuator Motor is the core of the WaterCop Classic Flood Prevention System. The Actuator Motor controls a connected shut-off valve (sold separately) to shut off your water supply when it receives alert signals from a paired WaterCop flood sensor or control switch (sold separately), limiting the spread of leaks and minimizing damage to your property. The Actuator Motor receives signals via 418 MHz transmissions from compatible flood sensors up to 200 feet away or via ethernet cable from a wired Water Control Wall Switch or compatible security or automation system. Once the motor seals your main water line, it will not open until you press the “Open” button located on its face. The motor also allows you to manually close the connected shut-off valve by pressing the “Close” button. Multiple WaterCop systems may be installed in a single home and operate independently by adjusting digital security codes via dip switches located behind the motor’s cover.

The WaterCop Wireless Flood Sensor, 1 Probe is a 418 MHz wireless water detecting sensor that reports the presence of water to a paired WaterCop Actuator or Interface in order to close your main water line and protect your home and belongings from water damage caused by leaks or ruptures from your plumbing system. This sensor includes a built-in 418 MHz transmitter and one sensor probe with twin gold prongs at the end of a 6-foot wire. When the Wireless Flood Sensor detects water through its attached probe, it wirelessly alerts a nearby WaterCop Actuator Motor within 200 ft to seal the main water line.

The WaterCop Water Shut-Off Valve, Lead Free connects directly with a WaterCop Electric Actuator Motor (sold separately) to close and open your main water line. When a paired WaterCop flood sensor, Water Control Switch, or smart security system notifies the WaterCop Actuator Motor of a detected leak, the WaterCop Motor will close.

Where to Place WaterCop Sensors:

  • Kitchen: dishwashers, refrigerators, icemakers
  • Bathroom: toilets, bathtubs, showers
  • Water Heaters
  • Washing Machines
  • Humidifiers
  • Spigots
  • Sinks


  • (1) WaterCop Electric Actuator Motor
  • (1) WaterCop Water Shut-Off Valve for 1/2" Pipe, Lead Free
  • (2) WaterCop Wireless Flood Sensor, 1 Probe
  • 20 ft Power Cord
  • Instruction Manual


  • The WaterCop motor requires electrical power (120V standard outlet) and will not operate during a power outage.
  • Batteries/power supply not included for sensors.
  • All WaterCop brass valves comply with published NSF61 standards which restrict lead and other metal contaminants to safe levels for drinking water systems; the lead-free valves are approved for sale in all U.S. States, and comply with California AB1953 and Vermont S.152 laws.
  • Flood Sensors are only for use with the wireless 418 MHz WaterCop Classic system.

    Stop Damaging Water Leaks

    Flood damage and losses related to plumbing problems can lead to higher home insurance costs and possibly the loss of affordable coverage altogether. The WaterCop system, when properly installed and maintained, offers a proven method to effectively reduce the chance of catastrophic plumbing related flooding. WaterCop automatic water shut-off systems automatically turn off the water when a leak has been detected. WaterCop Systems are activated by flood sensors, an optional remote switch, and work with various home security systems. Maintain a smarter home ... install a WaterCop today!


    Technical Details

    • Manufacturer Part #: WCKIT1
    • Warranty: 2 Years

    Electric Actuator Motor (WCDACT)

    • Frequency: 418 MHz
    • Wireless Range: approx. 100 to 200 feet
    • Ambient Temperature: 35° to 105°F
    • Enclosure: Polycarbonate
    • Voltage: 12VDC, 60 Hz
    • Power Cord: 20-foot power cord with 2-prong transformer for a standard outlet.
    • Approvals: FCC, UL

    Water Shut-Off Valve for 1/2" Pipe, Lead Free (WCVLF 1/2)

    • Max. Working Pressure: 125 PSIG
    • GPM Flow @ 1 PSI pressure drop*:
      • 1/2" NPT: 19 GPM
      • 3/4" NPT: 34 GPM
      • 1" NPT: 52 GPM
    • Ambient Temperature: 35° to 105°F
    • Valve: Full-Port, Brass, NPT
    • Valve Seals: RTFE
    • Approvals: NSF 61 rated valve; Complies with Uniform Plumbing Code.

    *For cold water applications.

    Single-Probe Wireless Flood Sensor (WCDFS1)

    • Color: White
    • Number of Probes: 1
    • Battery: Two (2) AA alkaline batteries (not supplied)
    • Battery Life: Approx. 1 year
    • Wireless Frequency: 418 MHz
    • Wireless Range: 150 to 200 feet
    • Sensor Cord: 6 feet