Founded in 2001 in Fuzhou, China, by Ken Li and his father Lee, Chuango AioT Technology Corporation specialises in wireless smart home technology ranging from automating security and home techniques to energy management and healthcare systems. After winning the product prize "Intruder Alarm or Outdoor Deterrent" at the IFSEC & FIREX Awards, Chuango founded its European headquarters in Hoofddorp, Netherlands in 2013. This multifunctional branch is a design, support and logistics centre to serve existing and new partners and customers of Chuango in the EMEA economic area. Chuango wants to provide the best for its customers. The team includes experienced employees from the areas of sales and marketing, technical support and logistics, and from the consumer electronics and IT industries. The DWC-102 is suitable for all doors, windows and openings. When triggered (disconnection), an alarm signal is sent to the system controller, which responds accordingly. It also features tamper protection to ensure system integrity and can work with other wired detectors. When connected to a GSM alarm system, a warning message via SMS is possible when battery is low. Technical data: power supply DC 1.5 V (battery AA 1.5 V LR6 x 1 piece). - Static Current ≤35uA - Alarm current ≤10mA - Transmission range ≤80m (open terrain). - Housing material: ABS plastic. - Operating temperature temperature: -10°C ~ 55°C. - Relative humidity: ≤80%(non-condensing) - Transmitter dimensions: 71 x 34 x 17.5 mm (L x W x H). - Magnet dimensions: 51 x 12 x 13.5 mm (L x W x H).