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The SeaHawk LD310 single zone leak detection controller monitors up to 300 feet (91 meters) of sensing cable.  It is compatible with RLE SC, SC-R, and SC-ZH leak detection sensing cables, as well as SD-Z and SD-Z1 spot detectors.


Make Sure You Have An Isolated Power Supply!

RLE leak detection controllers, including the LD310, require an isolated power supply. A power supply is not included with the LD310. Purchase RLE’s WA-DC-5-ST with the LD310.

If you are using the LD310 in an international location, purchase the PSWA-DC-5 power supply and any applicable blade attachments.

Click here for more information about RLE leak detection controllers and isolated power supplies.

Included Equipment: LD310 controller, leader cable, end-of-line (EOL) terminator

Additional Requirements: Power supply WA-DC-5-ST, sensing cable and spot detector (as needed for application)

Power: Requires an isolated power supply.

  • 5VDC Isolated (±10%) @ 100mA max; requires RLE power supply WA-DC-5-ST (not included)


  • Leak Detection Cable: Compatible with SC, SC-R, and SC-ZH sensing cables as well as SD-Z and SD-Z1 spot detectors (not included)
  • One Cable Input: Requires 15ft (4.6m) leader cable and EOL terminator (included)
  • Maximum Sensing Cable Length: 300ft (91m) of conductive fluid sensing cable
  • Detection Response Time:  When used with conductive fluid or chemical sensing cables, less than 20sec; 10sec typical.

Outputs: 2 Form C Alarm Relays (leak and fault); 1A @ 24VDC, 0.5A resistive @ 120VAC; configurable as supervised or non-supervised

Alarm Notification

  • Audible Alarm: 85dB @ 10cm (min)
  • Visual Alarm: Bi-color LED

Front Panel Interface

  • Audible Alarm: Indicates cable break or leak detected
  • LED Indicator:
    • Normal Operation: Green
    • Cable Fault: Flashing orange
    • Leak Detected: Flashing red
  • Push Button Switch:
    • Push Once: Silence alarm
    • Push and Hold for 5 Seconds: Initiates system test, resets system, clears all active alarms

Operating Environment

  • Temperature: 32° to 122°F (0° to 50°C)
  • Humidity: 5% to 95% RH, non-condensing
  • Altitude: 15,000ft (4,572m) max.

Storage Environment: -4° to 158°F (-20° to 70°C)

Dimensions: 4.4”L x 2.5”W x 1.5”H (11.2cmL x 6.4cmW x 3.8cmH)

Weight: 0.2lb (0.10kg)

Mounting: Free standing, zip ties, screw and keyhole – spaced 2.5” (6.4cm), junction box – 2 screws spaced 3.28” (8.3cm)

Certifications: CE; ETL listed: conforms to UL 61010-1, EN 61010-1; RoHS compliant

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