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S4 Bases & Accessories

Gent ALD-302 S-Quad Anti-Ligature Ceiling Base

Product name
S-Quad Anti-Ligature Base
Release load
6.4kg
Release load certification
Certified to 6.4kg release load
Weight
0.16kg
Dimensions
138mm diameter by 30mm height
Mounting
Ceiling mounted base
Integral isolator
Built in magnetic switch provides loop continuity when multiple items are removed

Overview

What it is and how it fits the system.

The Gent ALD-302 is an S-Quad anti-ligature ceiling-mounted base that provides additional occupant safety within secure facilities. Certified to a 6.4kg release load and fitted with an anti-tamper lip to prevent storage of contraband, it incorporates a built-in magnetic switch that maintains loop continuity when multiple items are installed. It measures 138 mm in diameter by 30 mm high and is covered by patent 2528032A.

Technical overview

The Gent ALD-302 is a ceiling-mounted anti-ligature base from the S4 Bases & Accessories range, designed for secure facilities. It features an anti-tamper lip to prevent contraband storage and incorporates a built-in magnetic switch that maintains loop continuity when multiple units are installed. Certified to a 6.4kg release load, it helps ensure occupant safety by detaching under excessive force while preventing ligature points.

Measuring 138 mm in diameter and 30 mm in height, the ALD-302 weighs 0.16kg and is covered by patent . It is approved for in-cell detection by the National Offender Management Services (NOMS) in England. To maintain loop integrity, resistance should be monitored during and after commissioning, as excessive quantities may compromise performance. The device is part of the S-Quad range and provides additional safety to occupants within secure facilities by minimising ligature risks and preventing unauthorised item concealment through its specialised design.

Specifications

Full technical data for this part.

Product nameS-Quad Anti-Ligature Base
Order codeAnti-Ligature Base ALD302
Release load6.4kg
Release load certificationCertified to 6.4kg release load
Weight0.16kg
Dimensions138mm diameter by 30mm height
MountingCeiling mounted base
Integral isolatorBuilt in magnetic switch provides loop continuity when multiple items are removed
PatentSdal patent 2528032A
Anti tamperAnti tamper lip to prevent storage of contraband between base and detector
Loop capacity considerationTo ensure performance of the loop is not compromised, we recommend that loop resistance is monitored during and after commissioning using the Vigilon Loop Diagnostics Tool. It may be necessary to limit the quantity of Anti-Ligature devices on the loop.
ApprovalApproved for in-cell detection by National Offender Management Services (NOMS) in England

Specifications sourced from manufacturer documentation.

Specifications per manufacturer documentation, subject to change — E&OE. Spotted an inaccuracy? Let us know