The Deltabell PLUS provides light to light back of cover to provide around the clock visual deterrent A number of engineer friendly features; the unique levelling mechanism and modular components now make simple sounder installation a reality for you.

• Piezo sounder technology
• 3 Way tamper action
• Universal triggering inputs
• Supplied with rechargeable battery
• Engineer hold off
• Hinged lid available – see below
• Remote engineer hold off input
• Backlight
• IP65 rated
• Increased battery capacity
• Siren trigger input is continuously monitored for integrity
• Active self-test for SAB back up battery
• Fault relay output