AC/DC Operated Carbon Monoxide Alarm (CO Alarm) VST-C598IH FEATURES AND BENEFITS * AC/DC operated carbon monoxide alarm * Non-radioactive technology for environmental friendly * CO concentration threshold: varying time-to-alarm depending on concentration * With quick fix mounting bracket for easy installation and simple AC connector for easy installation * Fitting and battery tamper resist feature * Inter-connectable up to 40 CO, Heat And/Or Smoke Alarms * 3 color LED indicator (Fault and Alarm and AC power indicator) * Low-battery and battery missing warning indicator * Hush/Test button * Auto-reset when CO clears * CE approved, comply with EN50291-1:2010 AC/ DC Operated Carbon Monoxide Alarm (CO Alarm) VST-C598IH PRODUCT SPECIFICATIONS Model Number: VST-C598IH Power Source: 220-240V AC 50Hz and 9V DC Battery back-up Electrical Rating: MAINS POWER: Operating voltage : 220-240VAC, 50Hz Operating current (Max.): 60mA BACKUP BATTERY: Operating voltage : 9VDC Operating current (Max.) : 15uA (standby); 20mA (alarm) CO sensitivity: At 50 ppm, unit must alarm within 60 ~ 90 min At 100 ppm, unit must alarm within 10 ~ 40 min At 300 ppm, unit must alarm within 3 min Maximum Hush Time: 4 min Alarm Sound Level: 85 decibels at 1 meter Detection Type: Electrochemical Operation Temperature: 5'C to 38'C Ambient Humidity: 15% to 90% Relative Humidity