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Plug-in Water Detector SHT 450 with Sensor Cable

The Socket Water Detector with 2 m Sensor Cable: Alarm at Any Point Along the Cable, Plug & Play, No Batteries

Water always finds the path of least resistance - and often exactly where you least expect it: under kitchen cabinets, behind the washing machine, around aquariums or along pipes. The Schabus Water Detector SHT 450 is a socket-mounted device for detecting surface water leaks. It detects moisture at any point along its sensor cable, even the smallest drops, and warns you before more serious damage occurs.

As soon as the sensor cable comes into contact with water, an acoustic and visual alarm is triggered and the “Function” LED lights up red. Once the cable is dry again, the alarm switches off automatically. There are no batteries: the SHT 450 simply plugs into a 230 V socket and is immediately ready for use.

The sensor cable can be laid conveniently, unobtrusively and over a large area. This allows you to cover the entire area reliably without having to search for the lowest point where water would collect.

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Important note: The SHT 450 must not be operated outdoors. Do not open the device; it contains no user-serviceable parts. The device is not approved for any use other than that described.

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Good to know: The sensor cable is non-locating: it reports water at any point but does not indicate the exact location. Therefore, lay it where water would appear first.

Detect, warn, dry: automatically

The SHT 450 combines a robust sensor cable with a socket device that alarms loudly and clearly.

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2 m Sensor Cable

The black-and-white striped cable is clearly visible and reacts to moisture along its entire length.

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Alarm at Any Point

Conductive polymer reacts immediately and everywhere. Maximum leak size is 50 mm at any point.

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Acoustic and Visual

Loud buzzer and the “Function” LED that lights up red in the event of an alarm.

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Automatic Reset

The alarm switches off again as soon as the sensor cable has dried. Drying time is approx. 15 seconds.

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Plug & Play

Plug into the socket, lay out the sensor cable – done. Mains-powered with 230 V, no batteries.

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Robust and Cleanable

Abrasion-resistant and corrosion-resistant, with no exposed metal. Can be wiped with a damp cloth.

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Extendable up to 50 m

The cable can be extended if required. The total length should not exceed 50 m.

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Simple Function Test

Trigger the alarm immediately with a cloth soaked in water. The manufacturer recommends a monthly test.

What’s in the box

The device is ready for immediate use. There are no options or additional variants.

  • Water Detector SHT 450 with sensor cable
  • 1 m LIYY control cable
  • Operating instructions

How the SHT 450 is constructed

A 1 m long white LIYY control cable with a smooth surface starts at the socket device. This is followed by the sensor cable, which is clearly visible thanks to its black-and-white striped design.

1

Socket Device

The device with mains plug is plugged directly into a 230 V~ / 50-60 Hz socket. It combines power supply, evaluation and signalling unit in one housing with ventilation slots.

2

“Function” LED

It lights up green when the device is ready for operation and red as soon as the sensor cable comes into contact with water.

3

Buzzer

The integrated signalling unit immediately sounds an alarm as soon as the cable detects moisture – loud and clear directly at the socket device.

4

White LIYY Control Cable (1 m)

It connects the wall socket to the floor area where the sensor cable is laid. Its surface is smooth; it is briefly water-resistant, flame-retardant and self-extinguishing.

5

Sensor Cable (2 m)

Two sensor wires are embedded in a robust fluoropolymer carrier rod. The cable is mechanically strong, abrasion- and corrosion-resistant and very safe when handling water because no metal is exposed.

Laying the sensor cable correctly

Lay the sensor cable flat, unobtrusively and also around corners, under furniture or along walls and pipes.

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Kitchen and Bathroom

Under kitchen base units, sinks, washbasins and bathroom furniture.

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Appliances and Connections

Around washing machines, dryers, dishwashers and water connections.

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Aquariums and Technology

Under aquariums, pipes, tanks and water technology in living areas.

Notes on Cable Routing

  • Never lay the LIYY cable parallel to 230 V lines in order to avoid interference and safety risks
  • The LIYY cable is only briefly water-resistant and not suitable for permanent water contact or outdoor use without protection
  • According to the manufacturer, the LIYY cable is flame-retardant, self-extinguishing, low-adhesion and largely resistant to oils, greases, coolants and lubricants
  • When connecting several sensors in parallel, the cable lengths are added together, e.g. max. 20 m plus 30 m

Extending the cable and sensor cable

If required, you can extend the sensor cable up to 50 m or order the device directly from the factory with the desired cable length.

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Use only thin control cables: Extend exclusively with a LIYY cable of max. 2 × 0.14 mm². Larger cross-sections increase the electrical capacitance of the cable, which can lead to false alarms or interference.

How to extend the sensor cable

  1. Cut the existing white sensor cable.
  2. Connect a LIYY cable (max. 2 × 0.14 mm²) using terminals.
  3. Do not exceed the total length of 50 m.

The manufacturer recommends having the connection carried out by a specialist for longer cables or ordering the desired length directly from the factory. The black-and-white sensor cable can also be extended on request using the original sensor cable specially developed for this water detector. Extensions with other cable types are not possible, as function and safety would otherwise be impaired. Simply contact support for this.

Plug in, lay the cable, be protected

Commissioning

  1. Plug the SHT 450 into a 230 V~ / 50-60 Hz socket.
  2. The “Function” LED lights up green; the device is ready for operation.
  3. Lay the sensor cable flat in the area where water leaks could occur.

Behaviour in the Event of an Alarm

  • As soon as the sensor cable comes into contact with water, an acoustic and visual alarm is triggered
  • The “Function” LED lights up red
  • The alarm switches off again as soon as the sensor cable has dried
  • The sensor cable has a drying time of approx. 15 seconds

Test the function regularly

For your safety, the manufacturer recommends carrying out this test monthly.

  1. Touch the sensor cable with a cloth soaked in water. The alarm is triggered immediately.
  2. Remove the cloth from the sensor cable and briefly disconnect the device from the mains. The alarm switches off again.
  3. Plug the device back in. The “Function” LED lights up green.

Cleaning and Care

  • Avoid moisture from splash or rain water, dust and direct sunlight on the device
  • Clean the device only with a dry linen cloth, which may be slightly dampened in case of heavy soiling
  • Do not use solvent-based cleaning agents
  • If necessary, wipe the sensor cable with a damp cloth

Matching accessories from the manufacturer

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LIYY Control Cable 2 × 0.14 mm²

Sold by the metre (article number 300780) for proper extensions up to a maximum total cable length of 50 m per detection line. Use only thin, unshielded LIYY cables.

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Anti-Theft Protection for Socket Devices

Protects socket devices against unauthorised removal – ideal for public areas, cellars, garages or commercial installations.

Manufacturer’s Notes

  • Read the operating instructions carefully before installation and commissioning and keep them; they form part of the product
  • Packaging material is not a toy and does not belong in children’s hands
  • Do not open the device; it contains no user-serviceable parts
  • Do not operate the device outdoors
  • Intended for residential, commercial and industrial areas as well as small businesses such as workshops and service centres
  • All places of use are connected to the public low-voltage network
  • The manufacturer is not liable for damage or losses resulting from the fact that no alarm signal is issued despite a water leak
  • The declaration of conformity is available for download on the manufacturer’s website

Warranty, Guarantee, Returns and Disposal

The SHT 450 is covered by the statutory warranty of at least 2 years in the EU. Manufacturer Elektrotechnik Schabus additionally offers a 5-year guarantee that can be registered online. Repair and spare parts are available directly from the manufacturer, even beyond the statutory warranty. The prerequisite is that the device has been used in accordance with the operating instructions.

If your device is defective, please get in touch. For returns, the manufacturer requires a description of the fault, proof of purchase as well as your address and delivery address. Within Germany you will receive a free return label by e-mail. The device must be adequately packed; unpaid packages will not be accepted and unjustified returns will be charged subsequently.

The SHT 450 does not belong in household waste. The crossed-out wheeled bin symbol on the product reminds you to use the take-back systems so that the materials can be recycled in an environmentally friendly manner at the end of their service life (WEEE Reg. No. DE91394868). Further information is available from your local waste advice centre or from the manufacturer.

Why the SHT 450 is suitable

Area-wide Coverage

The sensor cable detects water at any point without you having to search for the lowest point.

Ready for Immediate Use

Plug in, lay the cable – done. No batteries required.

Loud and Clear

Acoustic and visual alarm directly at the socket device.

Automatic Reset

Dry means quiet again without you having to do anything.

Durable

Abrasion-resistant, corrosion-resistant sensor cable with no exposed metal.

Expandable

Extendable up to 50 m; on request also available from the factory with your desired cable length.

From the Manufacturer

Made in Germany, 5-year guarantee can be registered, repair and spare parts directly from the manufacturer.

Areas of Application

  • Kitchen and bathroom furniture
  • Laundry rooms and utility rooms
  • Boiler rooms, cellars and technical rooms
  • Aquariums and water technology in living areas
  • Under pipes, tanks and containers
  • Data centres, server rooms and control rooms, for example under raised floors and along cooling lines
  • HVAC and air-conditioning technology, under devices with condensate
  • Holiday apartments and rooms that are not checked daily

The Schabus Water Detector SHT 450: Area-wide. Loud. Reliable.

Frequently Asked Questions

How does the SHT 450 work?

The 2 m long sensor cable detects moisture along its entire length, not just at one point. As soon as even individual drops hit the cable, the socket device triggers an acoustic and visual alarm.

How is the SHT 450 installed?

Simply plug it into a 230 V~ / 50-60 Hz socket and lay the sensor cable in the area to be monitored. As soon as the “Function” LED lights up green, the device is ready for operation.

How do I lay the sensor cable?

Unobtrusively and over a large area, for example under kitchen furniture, along skirting boards or behind washing machines. The robust cable can also be routed around corners or curves. The sensor cable is non-locating, so lay it where water would appear first.

When does the alarm stop?

Automatically as soon as the sensor cable has dried. The drying time is approx. 15 seconds. The “Function” LED then lights up green again.

How do I test the SHT 450?

Touch the sensor cable with a cloth soaked in water; the alarm is triggered immediately. To end the test, remove the cloth and briefly disconnect the device from the mains. The manufacturer recommends carrying out the test monthly.

Can I extend the cable?

Yes. The white sensor cable can be extended with a LIYY cable (max. 2 × 0.14 mm²) up to a total of 50 m; for this purpose it is cut and reconnected with terminals. The black-and-white sensor cable can also be extended on request using the original sensor cable.

Why may I only use thin cables for extension?

Larger cross-sections increase the electrical capacitance of the cable. This can lead to false alarms or interference. Therefore only use thin LIYY control cables with a maximum of 2 × 0.14 mm².

What do I need to consider when laying the cable?

The cable must not run parallel to 230 V lines. The LIYY cables are only briefly water-resistant and not suitable for permanent water contact or outdoor use without protection.

May I operate the SHT 450 outdoors?

No. The SHT 450 is intended exclusively for indoor use and must not be operated outdoors.

Does the device require maintenance?

The device contains no user-serviceable parts and must not be opened. Check the function regularly with the function test and clean it only with a dry linen cloth.

How long is the warranty?

The statutory warranty of at least 2 years applies in the EU. In addition, manufacturer Schabus offers a 5-year guarantee that can be registered online.

Questions about the Water Detector SHT 450?

Our support team in Germany will advise you free of charge on selection, installation and configuration.

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Datasheet 1 (1.59 MB)

Plug-in Water Detector SHT 450 – With Sensor Cable

The SHT 450 is a plug-in water detector with an external sensor cable that reliably detects water accumulations. Ideal for technical rooms, basements, or under household appliances. The external sensor can be flexibly positioned to monitor critical areas early.

Technical Data

  • Operating voltage: 230 V AC, 50–60 Hz (±10%)
  • Power consumption: approx. 0.8 W
  • Protection rating: IP 20
  • Dimensions (HxWxD): 118 × 60 × 44 mm
  • Cable length: 1 m

Sensor & Measurement

  • Sensor cable: external, 2 m, 2-wire, Ø 4.5 mm nominal, non-location capable, extendable on request
  • Cable details: 2×30 AWG, conductive fluoropolymer jacket, abrasion-resistant > 65 cycles according to UL719
  • Sensor continuous operation temperature: max. +70 °C
  • Sensor drying time: approx. 15 seconds

Alarm

  • Sound pressure level: 90 dB @ 10 cm

Environmental Conditions

  • Operating range: -15 °C to +40 °C

Installation

  • Socket device, easy installation

Manufacturer information:

Electrical engineering Schabus GmbH & Co. KG

Baierbacher Straße 150

83071 Stephanskirchen
Germany

Telephone: +49 80 36 / 674 979 – 0

Email: info@elektrotechnik-schabus.de

Responsible person:

Didactum® Security GmbH

Im Mühlenfeld 4

48163 Münster
Deutschland

Fon: (+49) 250 19 71 63 54 / (+49) 171 33 11 577

Email: info@didactum-security.de

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