Espire optical smoke alarm.

• 230V mains powered with a replaceable 9V battery backup.
• Grade D2 installations.
• Recommended for living areas, bedrooms, escape routes and stairways.
• Sound output: 85dB @ 3 metres.
• Supplied with lock-in wiring base.
• Wired interconnectivity with up to 28 other devices.
• Supports RF-Link module (ES1RF), sold separately.
• Dust compensation and insect mesh for reduced accidental triggering of alarms.
• 3 LEDs: Green - Power, Yellow - Fault and Red - Fire.
• Auto dim night mode reduces the brightness of the indicator LED.
• Manual test button.
• Built to EN 14604 standards.
• Dimensions (mm): 132(Diameter) x 52(Depth).

Click for Espire ES1SRV smoke alarm datasheet