Suspended heptafluoropropane (FM200) fire extinguishing devices are pre-assembled units that integrate storage containers, container valves, nozzles, and related components into a single independent unit. These units can be suspended from the ceiling or fixed to a wall, and can be activated automatically or manually to discharge extinguishing agent during a fire.

Based on the installation method, they are classified as suspended type and wall-mounted type. The appropriate type is selected according to the spatial layout of the protected area. The suspended heptafluoropropane fire extinguishing device operates accurately and reliably, with a short discharge time, rapid fire suppression, simple construction and installation, low engineering investment, and no occupation of the floor area within the protected zone.

• High fire extinguishing efficiency
• No residue after fire extinguishing
• No adverse effect on electronic equipment

FM200 suspended fire extinguishing equipment is available in two types: temperature induction (fixed temperature) and electromagnetic induction.

Fixed temperature type: Relies on the room-temperature glass bulb inside the valve to expand and rupture during a fire, opening the valve to release the extinguishing agent.

Electromagnetic type: Consists of an extinguishing agent storage tank, electromagnetic drive components, nozzle, pressure display, and signal feedback components. It can be hung or fixed on a wall and is used in conjunction with alarm devices such as fire detectors, manual push buttons, alarm bells, sound alarms, and fire alarm controllers.

Suspended heptafluoropropane fire extinguishing device — fixed temperature type (left) and electromagnetic type (right)

This fire extinguishing controller relies on the valve's temperature-controlled glass bulb to expand and rupture during a fire, achieving its extinguishing effect. At temperatures generally around 68 °C, the bulb automatically ruptures and releases the fire extinguishing agent.

Electromagnetic control is primarily available in two modes: automatic and manual.

This fire extinguishing controller is equipped with both a smoke detector and a temperature-controlled heat detector. The controller features a control mode selector. When set to the "Automatic" position, the controller operates in automatic mode.

• If only one detector generates a fire signal, the controller emits an audible and visual fire alarm to notify the user of the abnormality, without activating the fire extinguishing device to release the extinguishing agent.
• If activation of the fire extinguishing device is absolutely necessary, press the "Emergency Start Button" to activate the device and release the extinguishing agent to extinguish the fire.
• When both detectors simultaneously emit fire signals, the controller emits audible and visual fire signals, notifying personnel of a fire and urging them to evacuate the scene. It also issues a linkage command, shutting down connected equipment such as fans and fire dampers. After a 30-second delay, it issues a fire extinguishing command, activating the solenoid valve, opening the container valve, and releasing the fire extinguishing agent to extinguish the fire.
• If, during the alarm process, the fire extinguishing device is no longer required to activate, the "Emergency Stop" button outside the protected area or on the control panel can be pressed to terminate the control extinguishing command, preventing activation of the fire extinguishing device and release of the extinguishing agent.

When the control mode selector on the controller is in the "Manual" position, the fire extinguishing controller is in manual control.

• When the fire detectors emit a fire alarm signal, the controller issues an audible and visual fire alarm signal without activating the fire extinguishing device.
• After personnel have confirmed that a fire has occurred, they can press the "Emergency Start" button outside the protected area or on the controller panel to activate the fire extinguishing device, release the fire extinguishing agent, and extinguish the fire.
• The alarm signal remains active. Regardless of wh the device is in automatic or manual mode, pressing any emergency start button will activate the fire extinguishing device, release the fire extinguishing agent, and put out the fire.
• The controller will immediately enter the fire extinguishing alarm state.