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August 31, 2026 3 min read
Installation manual for the Ecolink WST-612 Flood and Freeze Sensor (ECWST612) — a wireless dual-purpose leak and freeze detector for Honeywell and 2GIG security panels.
Installation manual for the Ecolink WST-612 Flood and Freeze Sensor (ECWST612) — a wireless dual-purpose sensor that detects water leaks and freezing temperatures, compatible with Honeywell and 2GIG security panels.
| Spec | Value |
|---|---|
| Frequency | 345 MHz |
| Battery | One 3Vdc lithium CR2450 (620mAH) |
| Battery life | Up to 10 years |
| Freeze detection | Triggers at 41°F (5°C), restores at 45°F (7°C) |
| Flood detection sensitivity | Minimum 1/64th inch of water |
| Operating temperature | 32°–120°F (0°–49°C) |
| Operating humidity | 5–95% RH, non-condensing |
| Compatibility | Honeywell and 2GIG security panels |
| Supervisory signal interval | Approx. 64 minutes |
| FCC ID / IC | XQC-WST612 / 9863B-WST612 |
The WST-612 detects water across its gold probes and alerts immediately when moisture is present. The freeze sensor triggers when the temperature drops below 41°F (5°C) and sends a restoral signal once it rises back to 45°F (7°C).
Put your alarm panel into sensor learn mode (refer to your panel's own instructions for the exact menu). Locate the vertical line on the side of the WST-612 — you'll need a magnet (not included) to trigger a transmission from that point.
Alternatively, manually enter the 7-digit serial number printed on the back of the unit into the panel. For 2GIG systems, the equipment code is 0637.
Place the sensor anywhere you want to detect flooding or freezing — under a sink, near a water heater, in a basement, or behind a washing machine. To keep the unit from shifting out of position, use the provided sensor bracket to secure it to the floor or wall.
A low-battery signal is sent to the control panel automatically. To replace:
This equipment complies with FCC Class B digital device limits (Part 15) and Industry Canada license-exempt RSS standards. If interference occurs, try reorienting/relocating the receiving antenna, increasing separation between the equipment and receiver, or connecting to a different circuit. Unauthorized modifications may void the user's authority to operate this equipment.
Ecolink warrants this product against defects in material and workmanship for 2 years from date of purchase. Excludes damage from shipping/handling, accident, abuse, misuse, ordinary wear, improper maintenance, failure to follow instructions, or unauthorized modification. Remedy is repair or replacement at Ecolink's option, and applies only to the original buyer. Maximum liability is limited to replacement of the defective product.
Ecolink Intelligent Technology Inc. • 2055 Corte Del Nogal, Carlsbad, CA 92011 • 855-632-6546
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