Temperature range: 0°C - +37°C (+32°F - +99°F) Adjustable temperature alarm Provides accurate temperature monitoring from the exterior of a glass aquarium Alarm indicator briefly sounds and continuously flashes when the aquarium reaches a range outside the set parameters Securely mounts on the exterior of a glass aquarium Setting the temperature alarm thresholds To set the temperature alarm, hold the SET button for 2 seconds. When SET Hi. appears, use the +/- buttons to set the high range, then press SET. When SET Lo. appears, use the +/- buttons to set the high range, then press SET to confirm. The alarm will sound, and the LED will flash when the High or Low temperature is exceeded. Pressing any button will silence the alarm. If the temperature is still outside the set range, the alarm will sound again in 1 hour. WARNING THESE PRODUCTS CONTAIN A NON-REPLACEABLE BUTTON BATTERY.
