The Model WL-1200 is a wireless vortex flow meter that replaces our WM-1000. It is easier to use, with equal or better range, and is less expensive. It consists of a flow meter and our new UMI-200 wireless universal meter interface, which connects via short wires to the irrigation controller. To the controller the interface looks like a wired flow meter.

The mechanical parts of the WL-1200 are identical to those of the WM-1000. In particular, it uses the same vortex technology with no rotating parts, and will fit in the same space as the WM-1000.

The meter itself should be installed above ground, since soil (particularly wet soil) impedes radio transmissions, although some customers have also reported success with below-ground installations. We use our own proprietary 900 MHz ISM band protocol for better range than Bluetooth or WiFi. Line of sight transmission through a single exterior wall was tested to more than 1/2 mile range.

The customer should first test the radio communications by placing the meter near its intended final location, with the UMI-200 interface connected to the controller. If communication fails, we offer a refund, minus shipping and a small restocking charge.

The UMI-200 interface is not weatherproof and must be installed indoors or in a suitable enclosure. It is powered by 24 VAC from the controller or an optional 5VDC adapter.

The UMI-200 allows programming of the output signal, from a default frequency pulse signal (with customizable K-factor and offset) to several pulse-per-gallon type scaled outputs (as desired by several Hunter controllers). This makes it compatible with almost any controller with a flow meter input. It also displays radio strength information, and has a special mode that allows the UMI-200 to listen for only a specific meter serial number in case there are multiple WL-1200 meters in a neighborhood that would otherwise interfere.

Unlike the WM-1000, the WL-1200 does not use frequency-hopping spread spectrum radio technology. Its fixed-frequency implementation should be fine for most applications. If you have a special situation where you're concerned about interference from other devices in the 915 MHz band, get the WM-1000.

To Wire to a Rachio Gen 3 Controller:

Compatible With:

• Rachio
  
• Rain Bird
• Hunter
  
• Rainmachine
• And many other flow-capable smart controllers!

Contains:

• 1" Flow Sensor
• UMI-200 Flow Interface Receiver
• 2 AA batteries, 18AWG wires, mounting hook-and-loop strips, spare O-rings

Highlights:

• Over 500 ft line of sight range
• Interface to any flow-capable smart controller on the market.
  
• 1 year+ battery life
• Includes PVC unions for easy installation
  
• See data sheet for details

WL-1200 User Manual

Batch order discount