Window and door contact – optical Detect open windows in the app and link your heating or alarm function to the reliable window and door contact. Window and door contact – optical Overview Comparison Technical data & downloads Home All Products Window and Door Contact – optical Open or closed – you notice it You feel comfortable in your own home, and you should also feel safe. How about a device that not only ensures the optimum indoor climate, but also your security? Homematic IP transforms your own four walls into a feelgood oasis with unquestionable security. The window contact detects open windows, switches off the heating or, if desired, also triggers an alarm. Colour variants white white anthracite anthracite Image Monitoring for a secure home Opening or closing of windows or doors is detected immediately and is displayed in the Homematic IP app. more In combination with a Homematic IP alarm siren (e.g. HmIP-ASIR-2) your home becomes even more secure. A loud alarm is automatically triggered when a window or door is opened. Image Adaptation to the window frame Match your window contact to the look of your plastic or wooden frame window. more Two caps in white and brown are included for this. Colour variants white white anthracite anthracite Image Fresh air without wasting energy The room temperature is automatically lowered during ventilation if you connect the window and door contact to Homematic IP radiator thermostats. more You can even define the lowering temperature individually. The comfort temperature is automatically restored as soon as you close the window. Händler finden Installationspartner finden Image Our products in a new dimension. Rotate the product in all directions, zoom in and experience it in three dimensions. This gives you a detailed picture of your favourite products. How to teach-in devices for room climate control How to teach-in devices for room climate control With Homematic IP controlling the room climate is easy. In this video we show you how to teach-in devices for room climate control like for example a radiator thermostat or an optical sensor that detects if the window is open or closed. Your advantages at a glance Do you want to live more safely, save money and protect the environment, or simply increase your living comfort? There are many good reasons for a Smart Home. Find out more now! Control heating find out more Save energy find out more Use the app find out more Connect devices together find out more Your advantages at a glance Do you want to live more safely, save money and protect the environment, or simply increase your living comfort? There are many good reasons for a Smart Home. Find out more now! Alarm siren – outdoor Get a loud acoustic signal when someone tries to enter your home without permission. Install the smart outdoor alarm siren, and you’ll be able to keep an eye on everything via the app. Radiator thermostat Control your radiators the smart way - to ideally suit your daily routine. You can do this easily with the radiator thermostat. Window and door contact – optical, plus Detect open windows instantly and make your heating or alarm function even smarter. And do it easily via the window and door contact with its very long battery life. 05. July 2023 Travel with a safe feeling: How to protect your home with smart home technology No one there to look after the house during the holidays? No problem, because your Smart Home protects itself: It keeps burglars away and lets you know immediately if something should happen. Find out more Homematic IP: Smart living. Simply exciting.Homematic IP means modern, flexible and secure technology from the European market leader*. Let the advantages of our system win you over, and start living smarter straight away. The Homematic IP appConfigure all settings for your smart home in the Homematic IP app, which you can use to control, regulate and monitor your devices at any time. No personal data is collected except for the IP address. learn more Always here for you and your queries. Whether you have a question about a product, something isn’t working as you wanted, you’re looking for a specialist partner, or you simply want to give us feedback: we are always here to help. Image FAQs This is where you’ll find the most important questions and our answers about our smart home solutions. All FAQs Image Service Have you purchased a Homematic IP product and now have questions about how it works? Our technical support team will be happy to help you. Service Image Specialist tradespeople Are you looking for a good specialist tradesperson near you? Simply use the convenient search function here on our website. Find a specialist tradesperson Image Dealers You can get Homematic IP products and good advice all over Germany. Find the right dealer near you here. Find a dealer Innovations, ideas, impulses: your news Get first-hand news about the latest innovative smart home solutions. View all news Alle News ansehen Filter by typeArtikelSocial Media Posting - Any -BlogBlog InternationalSocial media postsFirmwareHinweisNewsReference project Access Points & Control UnitsHeating & climate controlShutter controlLightSecurity & alarmAccessEnergy managementWeather & environmentInternational versionsCompatible systemsAccessories - Any -Experience comfortSave moneyLive safely and securelyControl away from homeComing homeEnjoy winterBuild smartHave fun with technology Use Cases (field_use_cases) Look forward to ChristmasConnect devices togetherUnderstand our productsGive feedbackUse the appControl heatingSave energyControl lightingSchedule shadeMonitor the buildingDeter burglarsDetect firesPrevent water damageControl access AblaufdatumFachpartnerFALMOT C8 NuovofioHeizenHmIP-ADA-DL-KAHmIP-ADA-DL-KBHmIP-ADA-DL-KCHmIP-ADA-DL-KDHmIP-ADA-DL-KEHmIP-ADA-DL-KFHmIP-ADA-FEHmIP-ADA-GNHmIP-ADA-GN-IHmIP-ADA-LGHmIP-ADA-SEHmIP-ADA-SE2HmIP-BBL-2HmIP-BBL-IHmIP-BDT-IHmIP-BPS-2HmIP-BRA-AHmIP-BRC2-2HmIP-BROLL-2HmIP-BSM-IHmIP-BWTH-24HmIP-BWTH-Ahmip-dbbHmIP-DLD-AHmIP-DLD-SHmIP-DLPHmIP-DLP-AHmIP-DLP-ASHmIP-DLP-WSHmIP-DS55-AHmIP-ESI-GASHmIP-ESI-IECHmIP-ESI-LEDHmIP-ESI-LinkyHmIP-eTRV-3HmIP-eTRV-B-2HmIP-eTRV-C-2HmIP-eTRV-CLHmIP-eTRV-E-AHmIP-eTRV-FHmIP-FALMOT-C8hmip-fdchmip-flcHmIP-FSI16HmIP-FSI16-2HmIP-GF1-AHmIP-GF2HmIP-GF2-AHmIP-GF3HmIP-GF3-AHmIP-HAP-AHmIP-HAP2HmIP-HAP2-AHmIP-HCU1HmIP-HCU1HmIP-HCU1-AHmIP-KRC4-2HmIP-KRCA-2HmIP-KRCK-2HmIP-LS1HmIP-LSShmip-mp3pHmIP-P-DRG-DALIHmIP-PDT-AHmIP-PDT-CHHmIP-PDT-PEHMIP-PS-2HmIP-PS-2-AHmIP-PSM-2-AHmIP-PSM-CH-2HmIP-PSM-PE-2HmIP-PSMCOHmIP-RGBWHmIP-SK20HmIP-SK21HmIP-SK22HmIP-SK23HmIP-SK24HmIP-SK25HmIP-SK26HmIP-SK27HmIP-SK28HmIP-SK29HmIP-SK30HmIP-Sk9-2HmIP-SMI55-2-AHmIP-SMI55-AHmIP-SMO230HmIP-SMO230-AHmIP-SMO230AHmIP-STH-AHmIP-STHDHmIP-STHD-AHmIP-STVHmIP-SWD-2HmIP-SWDM-2HmIP-SWDO-2HmIP-SWDO-AHmIP-SWDO-PL-2HmIP-SWSD-2HmIP-SWSD-2-NLHmIP-WGD-PLHmIP-WGSHmIP-WGS-AHmIP-WGS-A-FHmIP-WGS-FHmIP-WGTHmIP-WGT-AHmIP-WGT-A-FHmIP-WGT-FHmIP-WGTCHmIP-WGTC-AHmIP-WGTC-A-FHmIP-WGTC-FHmIP-WLAN-HAP-BHmIP-WRC2-2HmIP-WRC2-AHmIP-WRC2-A-2HmIP-WRC6-AHmIP-WSMHmIP-WSSHMIP-WTHHmIP-WTH-1HmIP-WTH-AHmIP-WTH-B-2HmIP-WTH-B-AHmIP-WUAHmIP-WWRC6-AHmIPW-AVHmIPW-AV-CO2HmIPW-AV-RHHmIPW-AV-SVNHmIPW-BC10HmIPW-BC22HmIPW-BC39HmIPW-BC62HmIPW-DRPS4HmIPW-P-DRAVCHmIPW-SCTHDHmIPW-SMI55-AHmIPW-SMO230HmIPW-SMO230-AHmIPW-STH-AHmIPW-STHD-AHmIPW-WGDHmIPW-WGD-PLHmIPW-WRC2-AHmIPW-WRC6-AHmIPW-WTH-AIP-SWDO-2Menü Container-TermineMenü MessenMenü Messen Int.Menü Online-SeminareMenü ProVertrieb-TermineMenü Roadshow-TermineMenü Roadshow-Termine PRONeuheitenPartnerHubReferenz-1Referenz-2Referenz-3ShowtruckSchulungenHmIIP-APPHmIP-BS2HmIP-FWIHmIP-PS-2HmIP-PSM-2HmIP-SK1HmIP-STHO-AHmIP-WKPHmIPW-FAL24-C10HmIPW-FAL24-C6JRB21_1JRB21_2JRB21_3JRB21_4JRB21_5Logo BüscherNewsHmIP-eTRV-2-UKHmIP-FAL24-C10HmIP-FAL230-C6HmIP-FAL230-C10HmIP-FALHmIP-eTRV-E-SHmIP-eTRV-EHmIP-eTRV-C-TPHmIP-eTRV-CHmIP-eTRV-BHmIP-eTRV-2HmIP-FAL24-TRHmIP-DS55HmIP-DRSI4HmIP-DRSI1HmIP-DRDI3HmIP-DRBLI4HmIP-DRBLIHmIP-DRAHmIP-DLSHmIP-DLDHmIP-DCHmIP-FAL24-C6HmIP-FALMOT-C12HmIP-CCU3HmIP-KRCKHmIP-PSM-PEHmIP-PSM-ITHmIP-PSM-CHHmIP-PSMHmIP-PSHmIP-PDT-UKHmIP-PDTHmIP-PCBSHmIP-MOD-HOHmIP-MIOBHmIP-KRCAHmIP-FBLHmIP-KRC4HmIP-HAP-UKHmIP-HAPHmIP-FSM16HmIP-FSMHmIP-FSI16HmIP-FROLLHmIP-FDTHmIP-FCI6HmIP-FCI1HmIP-DCHmIP-BWTH24AmazonEQ3-ADA-DWEQ3-ADA-KOEQ3-ADA-J2EQ3-ADA-J2EQ3-ADA-J1EQ3-ADA-J1EQ3-ADA-GSEQ3-ADA-G55EQ3-ADA-EJEQ3-ADA-EJEQ3-ADA-BJEQ3-ADA-MEEQ3-ADA-BJEQ3-ADA-B2EQ3-ADA-B2EQ3-ADA-B1EQ3-ADA-B1EQ3-ADACC-Sys-O-CyAuszeichnungAppEQ3-ADA-KOEQ3-ADA-MEHmIP-BWTHHmIP-ASIR-2HmIP-BSMHmIP-BSLHmIP-BRUHmIP-BROLLHmIP-BRC2HmIP-BRAHmIP-BPSHmIP-BDTHmIP-BBLHmIP-ASIR-OHmIP-Access PointEQ3-ADA-SHC+HAP1-HCPGeld sparenEzevizetrv-eeSportsESB1EQ3-RFAEQ3-MK-FEEQ3-ADA-VA80HmIP-PSM-UKHmIP-RC8HmIP-SCIHmIP-SCTH230HmIP-SF-2HmIP-SK12HmIP-SK13HmIP-SK14HmIP-SK15HmIP-SK16HmIP-SK17HmIP-SK4HmIP-SK7HmIP-SK9HmIP-SLOHmIP-SMIHmIP-SMI55-2HmIP-SMOHmIP-SMO-2HmIP-SMO-AHmIP-SMO-A-2HmIP-SPDRHmIP-SPIHmIP-SRDHmIP-SRHHmIP-STHHmIP-STHDHmIP-STHOHmIP-SWDHmIP-SWDMHmIP-SWDOHmIP-SWDO-IHmIP-SWDO-PLHmIP-SWOHmIP-SWO-BHmIP-SWO-PLHmIP-SWO-PRHmIP-SWSDHmIP-VDMOTHmIP-WGCHmIP-WHS2HmIP-WLAN-HAPHmIP-WRC2HmIP-WRC6HmIP-WRCC2HmIP-WRCRHMIP-WTH-2HmIP-WTH-BHmIPW-BCHmIPW-BCCHmIPW-BRC2HmIPW-DRAPHmIPW-DRBL4HmIPW-DRD3HmIPW-DRI16HmIPW-DRI32HmIPW-DRS4HmIPW-DRS8HmIPW-FALHmIPW-FAL230-C10HmIPW-FAL230-C6HmIPW-Falmot-C12HmIPW-FIO6HmIPW-SMI55HmIPW-SPIHmIPW-STHHmIPW-STHDHmIPW-WRC2HmIPW-WRC6HmIPW-WTHin eigener Sachekompatible ProdukeKooperationenMediolaMessen & Eventsnach HauseNovofermProduktinfossSmart bauenSonstigesSpaß an TechnikSprachsteuerungStartseiteSzenarioTestUpdatesZertifizierungen Filter by categoryAuszeichnungin eigener SacheKooperationenMessen & EventsProduktinfosSonstigesUpdatesZertifizierungen Invisible and intelligent: Compact flush-mounted switch actuators for smart retrofitting The new Homematic IP switch actuators fit even in the smallest flush-mounted box. This turns any building into a smart home. 13. August 2026 New Energy Management features for the Homematic IP Home Control Unit The EEBUS plugin for the Homematic IP Home Control Unit now supports the LPC and LPP functions for automatically limiting power consumption and power feed-in. 11. August 2026 Systematic security: fully integrated Homematic IP camera family now available The new Homematic IP security cameras are part of a comprehensive smart home ecosystem. With just one app, users have access to all features and can keep an eye on their smart home at all times. Rigorous data protection and secure encryption ensure complete peace of mind. 31. July 2026 Smart home control at the touch of a finger: Homematic IP Glass displays now also available for wireless installations The high-quality Homematic IP Glass displays are now also available in wireless versions. This means that, for the first time, these versatile touch displays are also available for smart home installations without bus cabling. 22. July 2026 Show more Technical Data Downloads Product Variants Window and door contact – optical Window and door contact – optical Order information Product Name (Short) HMIP-SWDO Item Number 157857A0 EAN Code 4047976578573 Technical data Supply voltage 1x 1.5 V LR03/micro/AAA Current consumption 100 mA max. Typical battery life 2 years (typical) Degree of protection IP20 Dimensions (W x H x D) 102 x 15 x 20 mm Ambient temperature 5 to 35 °C Weight 30 g (incl. batteries) Radio frequency 868.0-868.6 MHz/869.4-869.65 MHz Typ. open area RF range 300 m Other To enable operation, the device has to be connected with one of the following solutions: Homematic IP Access Point with free smartphone app and free cloud service, Central Control Unit CCU3 with the local user interface WebUI, Third-party solutions of partners Function type Sensor Connection Wireless Color white Homematic IP User Guide Version: July 202520.99 MB Overview of QR code stickers 1.46 MB Operating manual Door / Window Contact – optical Short description: HmIP-SWDO-2 / HmIP-SWDO-A | Product reference: 157857A0 / 160027A0 1.66 MB Datasheet Window and door contact – optical Short description: HmIP-SWDO-2 / HmIP-SWDO-A | Product reference: 157857A0 / 160027A01.44 MB Comparison of Homematic IP Window / Door Contacts Version V1.5 (09/2024)213.34 KB Declaration of conformity Window / Door Contact – optical Short description: HmIP-SWDO | Product reference: 140733AxB40.95 KB Declaration of conformity Window and door contact – optical Short description: HmIP-SWDO-2 | Product reference: 157857AxA / 157857AxB105.99 KB
Alarm siren – outdoor Get a loud acoustic signal when someone tries to enter your home without permission. Install the smart outdoor alarm siren, and you’ll be able to keep an eye on everything via the app.
Radiator thermostat Control your radiators the smart way - to ideally suit your daily routine. You can do this easily with the radiator thermostat.
Window and door contact – optical, plus Detect open windows instantly and make your heating or alarm function even smarter. And do it easily via the window and door contact with its very long battery life.
Invisible and intelligent: Compact flush-mounted switch actuators for smart retrofitting The new Homematic IP switch actuators fit even in the smallest flush-mounted box. This turns any building into a smart home. 13. August 2026
New Energy Management features for the Homematic IP Home Control Unit The EEBUS plugin for the Homematic IP Home Control Unit now supports the LPC and LPP functions for automatically limiting power consumption and power feed-in. 11. August 2026
Systematic security: fully integrated Homematic IP camera family now available The new Homematic IP security cameras are part of a comprehensive smart home ecosystem. With just one app, users have access to all features and can keep an eye on their smart home at all times. Rigorous data protection and secure encryption ensure complete peace of mind. 31. July 2026
Smart home control at the touch of a finger: Homematic IP Glass displays now also available for wireless installations The high-quality Homematic IP Glass displays are now also available in wireless versions. This means that, for the first time, these versatile touch displays are also available for smart home installations without bus cabling. 22. July 2026
