Description: Model QS-300-RB smoke detector uses a specialized smoke chamber design, which could sense the presence of smoke particles produced by fast combustion or slow smoldering fire. The QS-300-RB detectors have an external relay, provides Single/Double sets of volt-free changeover (form C) contacts change state when the detector signals an alarm. The detector will work with most modern fire alarm control panel security systems, and meets the requirements of UL 268 and EN 54-7.
- 4-Wire operation with
- Wide operating voltage
- External alarm relay output
- Advanced electronic technology
- Proven detection performance
- Designed to meet approvals worldwide (e.g. UL LPCB CE)