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Smoke and fire detectors
Smoke and fire detectors , and associated base units , detect smoke and other indicators of fire. Read More
Some detectors issue a signal to a separate alarm system, such as fire alarm sounders, beacons and other signalling devices . Others incorporate their own audible or visual alarm.
The detectors employ different processes to detect smoke, heat or carbon monoxide. The most common sensor types are optical, ionisation, thermistor or electromechanical.
Optical detectors use a light sensor, and are often more responsive to fires that start with a long period of smouldering.
Ionisation detectors can detect particles of smoke that are too small to be visible. This heightened sensitivity adds safety, but can also give rise to false alarms.
Sensitive smoke detectors can also be used to deter smoking in enclosed no-smoking areas.
Smoke and fire detectors - helping you find the best solution for your project.
Series 65 A1R heat detector
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The A1R heat detector operates by using a matched pair of thermistors to sense heat. One thermistor is exposed to the ambient temperature, the other is sealed. In normal conditions, the twoXP95 ionisation smoke detector
Visit siteThe XP95 ionisation smoke detector uses irradiated air in the dual sensing chambers to produce ions that travel to the positive and negative electrodes, creating a current flow. As smoke enters the outer chamber, the flow drops and voltage increases. The voltage is measured and an analogue signal is converted to digital for transmission to theXPander heat detector and mounting base
Visit siteXPander is a wireless intelligent detector range in which individual alarm devices communicate with the XP95 loop by radio signals. Every device is assigned an address and this address is recognised by the control panel in the same way as is the address of any device connected directly to the loop wiring. The XPander rate-of-rise heat detectorXP95 heat detector
Visit siteThe XP95 heat detector has a low air-flow resistant case for good contact between the sensing thermistor and the surrounding air. Temperature is measured by a single thermistor network which gives a voltage output proportional to the external air temperature. The signal is processed and transmitted to the control equipmentDiscovery multisensor detector
Visit siteSeries 65 standard relay base
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The Series 65 standard relay base provides one set of volt-free changeover (from C) contacts that change state when the detector signals an alarm. Features: Advanced electronic technology- PRODUCT
- Apollo Fire Detectors
Series 65 optical smoke detector
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The optical smoke detector uses an internal pulsing LED and a photodiode at an obtuse angle. In the event of smoke entering the chamber, the light pulse from the LED will be scattered andXP95 optical smoke detector
Visit siteThe XP95 optical detector uses an internal pulsing LED and a photo-diode at an obtuse angle. In the event of smoke entering the chamber, the light pulse from the LED will be scattered and registered by the photo-diode. A signal is generated and transmitted digitally to the control equipment- PRODUCT
- Apollo Fire Detectors
Discovery optical smoke detector
Visit siteThe Discovery optical smoke detector uses an IR LED that pulses light across a smoke chamber with a photodiode set at an obtuse angle. In clear air it receives no light, but when smoke enters the chamber, light from the LED is scattered onto the photodiode. A signal is then processed to provide an analogue value for transmission when the detectorDiscovery isolating base
Visit siteDiscovery heat detector
Visit siteDiscovery carbon monoxide detector
Visit siteThe Discovery carbon monoxide (CO) fire detector contains a long-life electrochemical CO sensor. The sensing technology is fast, accurate and needs only very low power. It does not detect smoke particles or heat and are is not a universal replacement for smoke detectors. CO fire detectors are electronic detectors that can indicate the outbreak ofSeries 65 diode base
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The Series 65 diode base is designed for use with conventional systems that have manual call points and detector bases on the same circuit. The base is fitted with a schottky diode on both the- PRODUCT
- Apollo Fire Detectors
- AlarmSense is a range of conventional detection and alarm products specially designed to be connected to the same pair of supply wires. The integrating optical smoke detector uses an internal pulsing LED and a photodiode at an obtuse angle. In the event of smoke entering the chamber, the light pulse from the LED will be scattered and registered by
Series 65 standard mounting base
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The Series 65 standard mounting base has been designed to enable detectors to be fitted without the need of force. It is particularly useful when fitting to suspended ceilings. All Series 65- PRODUCT
- Apollo Fire Detectors
AlarmSense mounting base
Visit siteAlarmSense is a range of conventional detection and alarm products specially designed to be connected to the same pair of supply wires. AlarmSense mounting bases are specifically designed for the mounting of AlarmSense detectors. They are fitted with electronic circuitry to monitor the presence of detectors and allow a fault to be signalled if a- PRODUCT
- Apollo Fire Detectors
AlarmSense optical smoke detector
Visit siteAlarmSense is a range of conventional detection and alarm products specially designed to be connected to the same pair of supply wires. The optical smoke detector uses an internal pulsing LED and a photodiode at an obtuse angle. In the event of smoke entering the chamber, the light pulse from the LED will be scattered and registered by theDiscovery intelligent mounting base
Visit siteThe Discovery intelligent mounting base requires only a low insertion force for installation, making it suitable for use on suspended ceilings. It has stainless steel contacts for the detector terminals and is supplied with an XPERT card. All detectors in the Discovery and XP95 ranges fit into the intelligent mounting base- PRODUCT
- Apollo Fire Detectors
Series 65 auxiliary relay base
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The Series 65 auxiliary relay base provides two sets of volt-free changeover contacts to facilitate the switching of a remote LED or other auxiliary device. Features: Advanced electronicSeries 65 ionisation smoke detector
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The ionisation smoke detector irradiates air in the dual sensing chambers to produce ions that travel to the positive and negative electrodes, creating a current flow. As smoke enters theAlarmSense heat detector
Visit siteAlarmSense is a range of conventional detection and alarm products specially designed to be connected to the same pair of supply wires. The AlarmSense heat detector operates by using a matched pair of thermistors to sense heat. One thermistor is exposed to the ambient temperature, the other is sealed. In normal conditions, the two thermistorsSeries 65 12V relay base
Visit siteThe Series 65 range of conventional detectors incorporates well-proven sensing technologies, together with advances in materials and electronics technology. The Series 65 12V relay base is designed for use in both fire and security systems. For fire systems, a jumper on the PCB is fitted to a latching position. For security systems the jumper is- PRODUCT
- Apollo Fire Detectors
- XPander is a wireless intelligent detector range in which individual alarm devices communicate with the XP95 loop by radio signals. Every device is assigned an address and this address is recognised by the control panel in the same way as is the address of any device connected directly to the loop wiring. The XPander multisensor detector contains

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