Products Our motto "Technology for Environmental Protection" has long been an inherent part of our product development philosophy and product range. We strive to improve the environment, to make processes which work with greater environmental compatibility and to avoid putting a strain on the environment. We offer you a multitude of innovative solutions, new products and smart concepts. More Informations Industries & Topics Industries & Topics Overview Fuel oil components Fuel oil components Overview Fast and clean oil filter change Avoiding fungal attacks in biofuel More performance with the sintered plastic sieve AFRISO Smart Home AFRISO Smart Home Overview Gateway HG 02 Products Products Overview AFRISOhome App Alexa Smart home applications Smart home applications Overview Leakage security Security Stand-alone applications Stand-alone applications Overview Getting started with AFRIShome Smart Home Craft 4.0 Craft 4.0 Overview OEM-Manifold systems Hydraulic Balancing Hydraulic Balancing Overview VarioQ Vario-DP Tank conversion Hygienic processes AFRISO Smart Home AFRISO Smart Home offers innovative solutions for intelligent home automation. With modern sensors and actuators, you can easily and conveniently control your home. More Informations Service-Center Service-Center Overview Service Contact persons Data exchange formats Catalogs Service-Center Flexible, cost-aware, on schedule, solution-oriented and fast – the AFRISO team always provides the decisive added value. More Informations Training & Events Training & Events Overview Exhibitions Exhibitions Overview SHK+E 2026, Essen IFH Intherm 2026, Nuremberg GET Nord 2026, Hamburg Search Domestic technology Alarm units, probes and signalling devices 40028 Öl-Wasser-Warngerät ÖWU Images 4 Back ÖWU | 40028 Oil/water alarm unit in-stock items Documents Benefits Combination probe for determination of leaking medium oil and waterfor storage rooms, manholes, drip pans and pumpswith fail-safe modewith visual/audible alarms, Test/Acknowledge buttons and relay output Application For visual and audible alarms if liquids with a flash point of > 55 °C are detected. Suitable for the following media: water, fuel oil, diesel fuel or low-viscosity lubricating oils, motor oils, gearbox oils or hydraulic oils, vegetable oils and transformer oils. Separate detection of electrically conductive and non-conductive liquids. Description Alarm unit in wall mounting housing for early detection of accumulations of liquids. ÖWU consists of a control unit with visual/audible alarm, Test and Acknowledge buttons, two relay outputs as well as a combination probe with photoelectric and conductivity sensors. An integrated microprocessor determines whether the detected medium is oil or water. The probe is mounted at the lowest point of the object to be monitored. Alarm is triggered when there is contact with escaped liquid. The audible alarm can be muted with the Acknowledge button. The visual alarm is cleared once the leak has been removed. The Test button allows you to simulate an alarm condition in order to perform a function test. The two voltage-free relay contacts are provided for connection of additional external alarm equipment or additional alarm units; e.g. 1 relay for water alarm and 1 relay for oil alarm. ÖWU features a "fail-safe" mode. The alarm units are suitable for panel mounting with a mounting frame. A sealing kit (IP 54) is available for rough application conditions.Alarm units with the EnOcean-ready label can be integrated into your existing building automation systems, for example, AFRISO smart home, at a later point in time. To do so, plug the EnOcean® wireless module into the EnOcean® interface (PCB of the device). The AFRISOhome gateway in conjunction with additional AFRISO smart home products with EnOcean® wireless technology allow you to configure a whole range of fully customisable, extensible features for the protection of plants and buildings. Technical data Downloads Accessories Technical data Operating temperature rangeMedium: 5/50 °CAmbient: -10/+60 °CStorage: -10/+60 °CProbeW x H x D: 40 x 300 x 55 mmCable length: 1.5 mmax. length: 50 m, shieldedSupply voltageAC 100 − 240 VNominal power 6 VASwitching outputRelay contact: 1 voltage-free changeover contact (water alarm),1 potenzialfreier Wechsler (Ölalarm)Contact rating: max. AC 250 V, 2 AAlarm soundmin. 70 dB(A)HousingWall mounting housing made of impact-resistant plastic (ABS)W x H x D: 100 x 188 x 65 mmWeight: 500 gDegree of protection: IP 40 (EN 60529)Scope of deliveryControl unitWandschienensonde ÖWUOptionEnOcean® wireless module (can be retrofitted) Downloads Öl-Wasser-Warngerät ÖWU Manuals PDF English German Accessories Mounting accessories Abb. Bezeichnung Dichtungsrahmen IP 54 | 43416 mounting frame | 43521 Montageset WATCHDOG Warngeräte | 43100 Function extensions Abb. Bezeichnung TCM 320 | 78082 Related products
AFRISO Smart Home AFRISO Smart Home offers innovative solutions for intelligent home automation. With modern sensors and actuators, you can easily and conveniently control your home. More Informations Service-Center Service-Center Overview Service Contact persons Data exchange formats Catalogs Service-Center Flexible, cost-aware, on schedule, solution-oriented and fast – the AFRISO team always provides the decisive added value. More Informations Training & Events Training & Events Overview Exhibitions Exhibitions Overview SHK+E 2026, Essen IFH Intherm 2026, Nuremberg GET Nord 2026, Hamburg Search
Service-Center Flexible, cost-aware, on schedule, solution-oriented and fast – the AFRISO team always provides the decisive added value. More Informations Training & Events Training & Events Overview Exhibitions Exhibitions Overview SHK+E 2026, Essen IFH Intherm 2026, Nuremberg GET Nord 2026, Hamburg Search
Images 4 Back ÖWU | 40028 Oil/water alarm unit in-stock items Documents Benefits Combination probe for determination of leaking medium oil and waterfor storage rooms, manholes, drip pans and pumpswith fail-safe modewith visual/audible alarms, Test/Acknowledge buttons and relay output Application For visual and audible alarms if liquids with a flash point of > 55 °C are detected. Suitable for the following media: water, fuel oil, diesel fuel or low-viscosity lubricating oils, motor oils, gearbox oils or hydraulic oils, vegetable oils and transformer oils. Separate detection of electrically conductive and non-conductive liquids. Description Alarm unit in wall mounting housing for early detection of accumulations of liquids. ÖWU consists of a control unit with visual/audible alarm, Test and Acknowledge buttons, two relay outputs as well as a combination probe with photoelectric and conductivity sensors. An integrated microprocessor determines whether the detected medium is oil or water. The probe is mounted at the lowest point of the object to be monitored. Alarm is triggered when there is contact with escaped liquid. The audible alarm can be muted with the Acknowledge button. The visual alarm is cleared once the leak has been removed. The Test button allows you to simulate an alarm condition in order to perform a function test. The two voltage-free relay contacts are provided for connection of additional external alarm equipment or additional alarm units; e.g. 1 relay for water alarm and 1 relay for oil alarm. ÖWU features a "fail-safe" mode. The alarm units are suitable for panel mounting with a mounting frame. A sealing kit (IP 54) is available for rough application conditions.Alarm units with the EnOcean-ready label can be integrated into your existing building automation systems, for example, AFRISO smart home, at a later point in time. To do so, plug the EnOcean® wireless module into the EnOcean® interface (PCB of the device). The AFRISOhome gateway in conjunction with additional AFRISO smart home products with EnOcean® wireless technology allow you to configure a whole range of fully customisable, extensible features for the protection of plants and buildings. Technical data Downloads Accessories Technical data Operating temperature rangeMedium: 5/50 °CAmbient: -10/+60 °CStorage: -10/+60 °CProbeW x H x D: 40 x 300 x 55 mmCable length: 1.5 mmax. length: 50 m, shieldedSupply voltageAC 100 − 240 VNominal power 6 VASwitching outputRelay contact: 1 voltage-free changeover contact (water alarm),1 potenzialfreier Wechsler (Ölalarm)Contact rating: max. AC 250 V, 2 AAlarm soundmin. 70 dB(A)HousingWall mounting housing made of impact-resistant plastic (ABS)W x H x D: 100 x 188 x 65 mmWeight: 500 gDegree of protection: IP 40 (EN 60529)Scope of deliveryControl unitWandschienensonde ÖWUOptionEnOcean® wireless module (can be retrofitted) Downloads Öl-Wasser-Warngerät ÖWU Manuals PDF English German Accessories Mounting accessories Abb. Bezeichnung Dichtungsrahmen IP 54 | 43416 mounting frame | 43521 Montageset WATCHDOG Warngeräte | 43100 Function extensions Abb. Bezeichnung TCM 320 | 78082