EveryDrop STX-100 Solar Powered Wireless Transmitter (STX-100)

Cut the Wire: EveryDrop STX-100 Solar Powered Wireless Flow Meter Transmitter

The EveryDrop STX-100 is a solar-powered wireless transmitter that converts any EveryDrop wired flow meter into a fully wireless unit—eliminating trenching, battery replacements, and complex wiring runs. Paired with the EveryDrop UMI-200 universal meter interface (sold separately), the STX-100 transmits live flow data over the long-range 915 MHz ISM band so your irrigation controller receives the same signal as a standard wired flow sensor.

Key Specifications & Features

• SKU: STX-100
• Power Source: Solar panel with dual AA NiMH rechargeable batteries
• Transmission Frequency: 915 MHz long-range ISM band
• Battery Life: Continuous recharge — batteries last for many seasons
• Receiver Required: EveryDrop UMI-200 Universal Meter Interface
• Mount: Standard U-shaped garden stake compatible (5 holes, 1.5″ spacing)
• Compatibility: Works with all EveryDrop wired flow meters (WM-1000, WM-2100, 1004-EX, etc.)
• Controller Output: UMI-200 mimics a standard wired flow meter to any controller
• K-Factor Programming: UMI-200 supports custom K-factor, offset, and Hunter-scaled pulse outputs

Why Choose the STX-100 Over Battery-Powered Wireless Meters?

Standard battery-powered wireless flow meters require annual battery replacement — a recurring cost and maintenance task. The STX-100’s solar panel continuously charges its NiMH batteries, removing the battery replacement cycle entirely. The above-ground solar mount also improves radio range compared to buried wireless units where wet soil impedes 915 MHz signals.

Compatible Irrigation Controllers

Via the UMI-200 interface, the STX-100 system works with Hunter, Rain Bird, Rachio, Rainmachine, Weathermatic, Toro, and any controller with a wired flow meter input. The UMI-200 can be configured to output frequency pulse (custom K-factor) or Hunter-specific scaled pulse signals.

Frequently Asked Questions

What does the EveryDrop STX-100 do?
The STX-100 is a solar-powered wireless transmitter that attaches to any EveryDrop wired vortex flow meter and transmits flow data wirelessly over 915 MHz to a UMI-200 interface connected to your irrigation controller. It eliminates the need to trench wires from the flow meter to the controller box.

Do I still need to buy a UMI-200 receiver?
Yes. The STX-100 transmitter pairs with the EveryDrop UMI-200 Universal Meter Interface (sold separately), which connects to your controller and decodes the wireless signal into a standard flow pulse input.

How long do the solar-charged batteries last?
The dual AA NiMH batteries are continuously recharged by the solar panel under normal sunlight conditions. EveryDrop expects them to last for many years without replacement.

Can the STX-100 be installed below ground?
No. The STX-100 and its solar panel must remain above ground for both solar charging and optimal radio range. Wet soil significantly attenuates 915 MHz signals.