* For vaccine fridges without internal door alarms * Pharma 1000 and 3000 models already have door alarms built in * The alarm is activated if the door is left open for a set amount of time. Your preferred open time is easy to set and can be adjusted to within 0 _ 21 minutes * Help to avoid cold chain breaches, protect sensitive and expensive medications, avoid security call out costs * Simple to fit * No tools required. Alarm attaches to door with strong adhesive tape and operates using a standard 9v battery (included) * Sound level: 85dB