What indicates the maintenance and recharge service status of a fire extinguisher?

The service collar is a critical component in indicating the maintenance and recharge service status of a fire extinguisher. It is a physical feature designed to be attached to the extinguisher, and it often features a color-coded system that indicates when the extinguisher was last serviced or recharged. This collar remains in place until the extinguisher is serviced again, helping technicians and users easily identify whether or not the extinguisher is up to date with its maintenance checks.

In contrast, the other options, while related to fire extinguisher maintenance and inspection, serve different purposes. For instance, the inspection label shows the last date of inspection, but it may not detail the service history as clearly as a service collar. A recharge tag indicates that the extinguisher has been recharged but does not provide comprehensive information on ongoing maintenance checks. The expiry sticker indicates the expiration date of certain components or the entire extinguisher, but it doesn’t communicate the service status at a glance like a service collar does.