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JAB Detektor prolivene vode LD-81 View larger

 Flood detector LD-81

LD-81

New product

JABLOTRON ALARMS S.A.

The Jablotron LD-81 is a wired flood/water‑leak probe for use in cellars, boiler rooms, bathrooms and similar spaces. It reports activation to a transmitter module (e.g. JA-81M or JA-150M) and is powered from the host unit. Max cable length 2.5 m.

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Purpose and operation

The LD-81 is a compact probe designed to indicate the presence of water on the floor or at low points in a room (basements, bathrooms, boiler rooms). When the probe electrodes are bridged by water the device signals a trigger condition; when dry it reports a non-triggered (standby) state.

Connection and power

LD-81 connects to the IN1 and GND terminals of a compatible transmitter/receiver—commonly the JA-81M for OASiS (JA‑80) or the JA-150M for JABLOTRON 100/100+. The probe receives its power from the host transmitter circuit and therefore does not require a separate power source.

Compatibility and installation notes

  • Compatible with JA-81M (OASiS) and JA-150M (JABLOTRON 100+).
  • Can be used with older JA-60N units (Profi/Maestro) if a 4.7 kΩ series resistor is inserted between INP and GND, where required by the host documentation.
  • Maximum cable length is 2.5 m; do not extend the cable to avoid false alarms.

Technical data and environment

Alarm condition: water flood. Operating temperature range: -10 °C to +40 °C. Intended for indoor use (environment class II). Complies with EN 50130-4 and EN 55022 standards.

Use cases and recommendations

LD-81 is suitable for monitoring areas at risk of water damage. Install the probe at the lowest practical point, route the cable to stay within the permitted length, and verify host-module settings before commissioning.

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