MB-240 is an advanced photo-thermal two-wire conventional detector designed for the MB series of conventional fire alarm system. Like the MB 220 smoke detector, it quickly detects fast, clean burning and smoldering fires while its heat sensors provide an additional layer of protection as the include a alarm threshold which improves the rejection of many factors that cause common false alarms with an additional alarm raised when temperature reaches 60°C or more.
MB-240 is an advanced photo-thermal two-wire conventional detector designed for the MB series of conventional fire alarm systems. Like the MB 220 smoke detector, it quickly detects fast, clean burning and smoldering fires while its heat sensors provide an additional layer of protection as the include a alarm threshold which improves the rejection of many factors that cause common false alarms with an additional alarm raised when temperature reaches 60°C or more.
Operates on low current
360° view, red LED indicates alarm on
Detects a either a rapid increase in temperature, or when temperature reaches above 60° C or 92° C (depending on switch setting)
Technical Specifications:
| Code | MB-240 |
| Description | Conventional Opto /Heat Multi-Sensor Detector, UQGS.S36306 |
| Standards | UL268 6th edition, EN54-7, SII1220, TR TC EAC 043-2017 |
| Specification | |
| Operating voltage | 15V dc to 30V dc |
| Voltage Waveform | Filtered DC, ± 1V max ripple at 120Hz |
| Standby current (average) | 95μA |
| Surge Current (max) | 340μA |
| Alarm current (max) | Must be limited externally to 40mA |
| Start-up time | 20 seconds |
| Heat Element rating | 60°C – 77°C – 92°C |
| Sensitivity | 2.55 ± 0.33% /ft |
| Sensitivity checker | Use no climb model TruTest (UL Listed) |
| Reset time (max) | 2 seconds |
| Mounting position | Ceiling at walls in open areas |
| Mounting options | Conventional MB-300 detector base |
| Area coverage | 100m² (subject to local standard) |
| Indication | 360° visibility light pipe |
| Environmental | |
| Environmental operating temperature | 0 – 49°C |
| Humidity (non-condensing) | 0 -o 93% RH |
| Physical | |
| Construction | PC/ABS |
| Color | White |
| Dimensions | 101mm x 33mm |
| Dimensions include base | 101mm x 45mm |
| Weight | 0.076 kg |
| Compatibility | |
| Suitable for use with: | MTech Conventional System |
MB-240
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