Rate of Rise Temperature - 63°C
AS1603 = Type A / AS/ISO7240.5 = Type A2R

• Sleek, low-profile design
• Two LEDs blink in standby
• 360° visibility
• Universal and sounder bases available
• Low current draw
• Built-in tamper resistant base design
• Remote LED option

The SS-A (System Sensor Model 51A51) “Type A” Thermal Detector has a sleek low-profile design and can be used with a standard or sounder base.

The detector combines electro-pneumatic technology (rate-of-rise operation) and thermistor technology (fixed temperature operation) to provide reliable detection of heat produced by a fire.