... Wireless smoke alarm system (smoke detector, fire system ) Wireless interconnectable fire alarm system(smoke detector,wireless alarm system ) 1. Form by DC Operated Wireless Smoke/heat/Carbon Monoxide/Ionization Alarm ... Test button4. High and stable sensitivity5. With quick fix mounting bracket for easy installation6. ... . Auto-reset when smoke clears11. CE, BSI, TUV, SAI Global approved with EN14604 ...