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Conventional Smoke and Heat Detectors
Hard wired to the main fire alarm panel, devices such as conventional smoke, heat, and multi-sensor detectors form an essential part of a fire alarm system. When triggered, these detectors send a signal to the main panel, which then activates other connected components and provides an early warning to occupants of an emergency and to proceed with an evacuation plan.
Suitable for use with 2, 4, and 8 zoned fire alarm panel systems, our range of smoke, heat, and multi-sensor detectors include leading manufacturers such as Apollo, AlarmSense, and Rafiki. Separate detector bases provide additional functionality, some enabling sounder and beacon capabilities, and others enabling two wire capability from a four-wire fire alarm panel system.
Apollo Series 65 Optical Smoke Detector
- Responds quickly to slow smouldering fires
- Supplied complete with lockable base
- Wide operating voltage
- Part of the Apollo Series 65 detectors for CFP and Kentec Sigma fire alarm panels
Apollo Series 65 A1R Heat Detector
- Fixed temperature detector with rate of rise function
- Responds when the temperature rapidly increases or reaches 55°C
- Supplied complete with lockable base
- Designed for use with CFP and Kentec Sigma K11 fire alarm panels
Apollo Series 65 CS High Temperature Heat Detector
- Triggers in to the alarm state when the temperature reaches 90°C
- Lockable base supplied as standard
- Wide operating voltage range
- Compatible with CFP and Kentec Sigma K11 fire alarm panels
Apollo Series 65 BR Heat Detector
- Rate of rise detector with fixed upper limit
- Detects a fire as the temperature increases or when 75 °C is reached
- Supplied complete with lockable base
- Suitable for use with CFP and Kentec Sigma 2, 4 and 8 zone panels
AlarmSense CS Fixed Temperature Heat Detector
- Responds when the temperature reaches 90 °C
- Ideal where smoke detectors are unsuitable
- Designed to comply with BS 5839-1 and 6
- Compatible with the CFP AlarmSense fire alarm panels
AlarmSense A1R Rate of Rise Heat Detector
- Measures the rate of increase in temperature
- Available with three different base options
- Quick and simple installation
- Compatible with the CFP AlarmSense fire alarm panels
AlarmSense Optical Smoke Detector
- Reacts quickly to slow-smouldering fires
- Available with standard, sounder or combined sounder/beacon base
- Two LED indicators for 360° visibility
- Suitable for use with the CFP AlarmSense fire alarm panels
Apollo Series 65 Sav-Wire Detector Base
- Allows Apollo Series 65 detectors to be used in two wire fire alarm systems
- Recognises the removal of a detector head
- Simple to fit and easy to wire
AlarmSense Sounder Base
- Monitors the presence of detectors
- High or low volume setting
- Designed to be used with AlarmSense detectors or cover caps
AlarmSense Combined Sounder/Beacon Base
- Can be fitted with an AlarmSense detector or cover cap
- High and low volume settings
- Gives an audible and visual warning on activation
Rafiki Twinflex Multipoint ASD Detector
- Designed for use with the Rafiki Twinfllex fire alarm panels
- Can be configured as a smoke, heat or combined setting detector
- Available with or without sounder and strobe
- Two wire installation design
Conventional Smoke and Heat Detectors Sensor Types
Conventional Smoke and Heat Detector Base Types
Conventional Smoke and Heat Detectors Sensor Types
Heat detectors can be classified into two main types: rate-of-rise heat detectors and fixed-temperature heat detectors. It is common for heat detectors to have both detection type s. However, the CS heat detectors only have a fixed-temperature heat detection in place.
The rate-of-rise detects a fire based on the rapid increase in temperature within a short period of time, typically responding when the temperature rise is faster than the preset threshold. These heat detectors are ideal for areas where a rapid temperature increase indicates fires such as factories or warehouses. Rate-of-rise heat detectors should be avoided in areas with rapid temperature increases which are considered harmless, such as in kitchens or around ovens.
Fixed temperature heat detectors activate an alarm when the preset temperature threshold has been exceeded, this is usually set at 70°C or 90°C for example. These are ideal for areas with gradual temperature change or locations where false alarms need to be minimised. Also, fixed temperature heat detectors are suitable for areas with high ambient temperatures as the threshold can be set higher, such as kitchens and warehouses with manufacturing equipment. Smoke detectors are not ideal for certain environments, such as warehouses, as their chambers are designed to be more accessible to allow smoke in, but this also allows dust and insects to enter; causing false alarms.
Smoke alarms commonly have optical sensors, which activate once smoke enters the chamber causing an LED light pulse to scatter. Optical smoke sensors are ideal for identifying slow burning fires which produce a lot of visible smoke. They provide a quick response and are less prone to false alarms where steam or cooking fumes are involved. Some smoke alarms are multipoint detectors therefore they detect smoke, heat or both. The sensors within are an optical smoke sensing chamber and a thermistor, this simplifies fire alarm systems by having multiple sensors within a single detector.
Conventional Smoke and Heat Detector Base Types
The Apollo Series 65 Sav-Wire Detector Base allows for additional detectors, call points or sunders to be fitted to the same pair of supply wires. This approach is a simpler and a more cost-effective approach of adding additional devices into your current 2 wire conventional fire alarm system.
The AlarmSense Sounder Base is designed to be used with AlarmSense detectors or cover caps where it acts as an additional warning during the event of a fire. The sounder base offers an additional sounder into the existing alarm system.
The AlarmSense Combined Sounder/Beacon Base provides a visual and audible warning during the event of a fire alarm. The beacon feature allows for compliance with the Disability Discrimination Act (DDA) which some buildings may be required to meet. This base unit can be connected to AlarmSense detectors or cover caps.