III – Outdoor sheltered
30-35cm – 4 wire
Grade 2 4 Wire Potted Single Reed Flush Contact (Brown)
A single reed flush contact designed to meet the requirements of EN50131 Security Grade 2.
A81B is also fully sealed with a potting compound, allowing it to work to Environmental Class III.
As this contact is a sealed unit, it is wired with the provided fly lead instead of terminals. Two wires handle the internal switch, while the remaining two function as a tamper loop.
Fitting screws are provided.