ACI LD310 Single Zone Leak Detection Controller


  • Monitor up to 300 feet of sensing cable and spot detectors.
  • Lightweight, compact design.
  • Plug and play installation.
  • Adjustable leak alarm sensitivity.
  • Local audible and visible alarm annunciation.
  • Integrate into a larger system via leak and fault relay outputs.

Automation Components, Inc. (ACI) creates, manufactures, and distributes building automation sensors for the heating, ventilation, and air conditioning (HVAC) Industry. Dpstar is ACI Authorised Distributor in Malaysia. Our product lines include Temperature Sensors, Relative Humidity Sensors, Current Sensors, Pressure Sensors, Gas Sensors, and Wireless Sensors.

ACI’s most cost-effective controller, the LD310 is easy to install and provides reliable leak detection as either a standalone device or integrated into a larger BMS platform.

What Sets ACI’s LD310 Apart?

  • Zone leak detection system alarms when water comes into contact with the attached sensing cable or spot detector. It is the right fit for spaces where sensing cables and spot detectors are visible so leaks can easily be located.
  • A supervised system, the controller continuously monitors the cable for leaks, breaks, and disconnects and sends an alarm notification when one is detected.
  • Local alarm annunciation. Onboard audible and visible alarms notify users of leaks and faults in real time.
  • Patented leak detection technology. Our cables dry and reset quickly so they’re ready to detect the next issue.


  • Ideal for smaller contained areas like air conditioner condensate pans.
  • Frequently used in facilities with pumps, chillers, boilers, and water control valves.


Power Requires an isolated power supply.
5VDC (±10%) Isolated @ 100mA max.; requires ACI’s power supply A/PS24-5V-S
Included Accessories Leader cable and EOL terminator
Sensing Cable One zone leak detection; Compatible with all ACI sensing cables and SD-Z and SD-Z1 spot detectors Requires
Cable Input 15ft (4.57m) leader cable and EOL (included)
Maximum Length 300ft (91m) of sensing cable
Detection Response Time <20sec; 10sec typical
Relay Output 2 Form C alarm relays (leak and fault); 1A @ 24VDC, 0.5A resistive @ 120VAC; configurable as supervised or non-supervised
Panel Alarm Notification
Audible Alarm
85dB @ 10cm (min)
Indicates cable break or leak detected
Visible Alarm Bi-color LED
Normal Operation – Green
Cable Fault – Flashing Orange
Leak Detected – Flashing Red
Push Button Switch
 Push Once
 Push and Hold for 5 Seconds
Silence audible alarm
Initiates system test, resets system, clears all active alarms
Operating Environment
32° to 122°F (0° to 50°C)
5% to 95% RH, non-condensing
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 (0.1kg)
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


ACI LD310 Leak Detection Controller_DpstarGroup