... (fire detector, security system) 1. EN14604 Optical smoke alarm with EN14604(fire detector, security system) 1.Photoelectric sensor for ... 3.Test button4.Non-radioactive technology for environmental friendly5.With wall mount plate set for easy installation6.LED operation ... when smoke clears10.CE, BSI, TUV, SAI global approved Comply with EN14064, AS3786, and UL217 standard Operation Temperature: 5°C ...