HRW Limited is a Hong Kong-based provider of HVAC controls, building management products, and security access solutions. Formed in late 2004, the company set out to offer an alternative source for HVAC controls and related devices. It has since developed a broad portfolio of standalone controls, peripheral equipment, and direct digital control (DDC) systems.

Its products support building automation and integration across BACnet, Modbus, and Siemens P1 FLN protocols, including controllers, gateways, power and switching equipment, and lighting controls. HRW also supplies sensors, transmitters, thermostats, valves, and damper actuators, along with metering products for electricity, water, flow, and thermal energy. Its gas detection range covers refrigerants, toxic and combustible gases, with fixed monitoring and portable personnel safety equipment. Security offerings include radio-frequency remotes and receivers for commercial and residential access control.

The company’s LoRa wireless solutions serve residential, commercial, and agricultural applications, with cloud data acquisition and on-site building management integration. HRW also provides technical resources, firmware updates, applications, and product documentation.