Carbon Monoxide Alarm HM-720ES series

SPECIFICATION

Model	HM-720ES	HM-720ES-M	WS-720ES
Power Supply	DC 2 × 1.5V Alkaline AA LR6 Batteries (PAIRDEER / NECTIUM / NANFU)	DC 2 x 1.5V Alkaline AA LR6 (PAIRDEER/NECTIUM/NANFU)	DC 2 × 1.5V Alkaline AA LR6 Batteries (PAIRDEER / NECTIUM / NANFU)
Sensor Lifespan	Max. 10 years	Max. 10 years	Max. 10 years
Battery Life	5 years	5 years	5 years
Wireless Protocol	/	2.4 GHz - 2.48 GHz	WiFi 2.4 GHz
Operating Conditions	-10 °C ～ +40 °C, 0–95% RH (Non-condensing)	-10℃ ~ +40℃(14°F ~ 104°F), 0% ~ 95%RH (non-condensing)	-10 °C ～ +40 °C, 0–95% RH (Non-condensing)
Storage & Transportation Conditions	-20 °C ～ +50 °C, 0–70% RH (Non-condensing)	-20℃ ~ +50℃(-4°F ~ 122°F), 0% ~ 70%RH (non-condensing)	-20 °C ～ +50 °C, 0–70% RH (Non-condensing)
Sound Level	≥85 dB (at 3 m)	≥85 dB (at 3 m)	≥85 dB (at 3 m)
Alarm Output	Visual and Audible Indication	Visual and Audible Indication	Visual and Audible Indication
Warm-up Period	Approx. 100 seconds	Approx. 100 seconds	Approx. 100 seconds
Mounting Method	Wall Mounting / Ceiling Mounting	Wall Mounting / Ceiling Mounting	Wall Mounting / Ceiling Mounting
Dimensions	85 × 85 × 28 mm	85 × 85 × 28 mm	85 × 85 × 28 mm
Certification	CE	CE	CE