D3A - Hager Timer Sound Cut Off Set
Used to cut off entrance hole external sound at night but leave the same sound running in nesting room
Usually used with amplifiers which can play 2 USB/SD Cards such as Borneo BA-7, Piro MW-88, Nestpro BZ-11, Nestamp BZ-555
Made in France
24 hours time
Every bit is 10 minutes
Reliable and long lasting
When charged for 120 hours, the back up battery will last for 200 hours