UL 521 certified

• NB-IoT Temperature Monitor: Professional NB-IoT Heat Detecti··· NB-IoT Temperature Mon··· 2026-07-10
• Wireless Interconnected Heat Detector: Professional Wireless··· Wireless Interconnecte··· 2026-07-10
• NB-IoT Temperature Alarm: Professional NB-IoT Heat Detection··· NB-IoT Temperature Ala··· 2026-07-10
• NB-IoT Temperature Alarm: Professional NB-IoT Heat Detection··· NB-IoT Temperature Ala··· 2026-07-10