| camera | Apparatus with a light-sensitive medium, designed to capture an image as a physical or digital record | CFIHOS-60000262 |
| catalytic | Device that uses a catalyst to accelerate a chemical reaction and produce a change in electrical properties | CFIHOS-60000273 |
| electrochemical | Device that measures the electric current or potential generated by a chemical reaction between an electrode and an analyte | CFIHOS-60000439 |
| fixed point | Device that activates when the temperature reaches a predetermined level, regardless of the rate of change | CFIHOS-60000501 |
| fusible plug | Device that melts or ruptures when the temperature exceeds a certain limit, releasing pressure or activating an alarm | CFIHOS-60000534 |
| infrared | Device that detects the infrared radiation emitted or reflected by an object, based on its temperature or composition | CFIHOS-60000643 |
| infrared flammable | Device that detects the presence of flammable gases by measuring the absorption of infrared light at specific wavelengths | CFIHOS-60000644 |
| ionization | Device that measures the electric current or resistance produced by ionized gas molecules in the presence of radiation or electric field | CFIHOS-60000654 |
| laser-based aspirating | Device that uses a laser beam and a photodetector to measure the scattering or absorption of light by smoke particles in a sampled air stream | CFIHOS-60000752 |
| open path | Device that uses a transmitter and a receiver to measure the concentration of gas along a linear path, based on the attenuation of light at specific wavelengths | CFIHOS-60000896 |
| optical | Device that uses a light source and a photodetector to measure the reflection, transmission, or modulation of light by an object or medium | CFIHOS-60000898 |
| optical beam | Device that uses a collimated light beam and a photodetector to detect the presence or absence of an object or obstruction in the beam path | CFIHOS-60000899 |
| photoelectric | Device that uses the photoelectric effect to convert light into electric current or voltage, depending on the intensity or wavelength of light | CFIHOS-60000946 |
| rate compensated | Device that activates when the temperature reaches a predetermined level, compensating for both ambient temperature changes and fast rate-of-rise situations | CFIHOS-60001036 |
| rate of rise | Device that activates when the temperature increases at a predetermined rate, regardless of the absolute temperature level | CFIHOS-60001037 |
| semi conductor | Device that uses a semiconductor material to vary its electrical conductivity or voltage in response to changes in temperature, light, pressure, magnetic field, etc. | CFIHOS-60001191 |
| solid state | Device that uses solid materials to perform sensing functions without moving parts, such as transistors, diodes, resistors, capacitors, etc. | CFIHOS-60001225 |
| ultrasonic (acoustic) | Device that uses high-frequency sound waves and their echoes to measure the distance, speed, shape, or presence of an object or medium | CFIHOS-60001310 |
| ultraviolet | Device that detects the ultraviolet radiation emitted or reflected by an object, based on its chemical composition or exposure to sunlight | CFIHOS-60001311 |
