Shenzhen Heiman Technology (深圳市海曼科技股份) manufactures point smoke and heat detectors, self-contained smoke alarms, combustible gas and carbon monoxide alarms, and Zigbee, LoRa and NB-IoT connected life-safety sensors. Its commercial photoelectric smoke detectors are LPCB-approved to EN 54-7:2018 under certificate 1138a and its domestic smoke alarms to EN 14604 under certificate 1138b. The Longhua plant supplies own-brand and OEM product into European and Middle Eastern distribution.