Runleader RL-HM057AD Digital Hour Counter — LCD, IP68 Waterproof, Wide 5–277V Compatibility

The Runleader RL-HM057AD is a compact digital hour counter with an LCD that tracks equipment runtime up to 99,999 hours and works across wide AC/DC voltages.

Whether you maintain lawn tractors, generators, compressors or industrial machines, accurate runtime logging helps plan servicing and protect equipment life. The RL-HM057AD combines a clear LCD readout, broad voltage compatibility and robust IP68 water resistance in a small panel-mount housing. It stores total operating hours, uses a backup battery for data retention, and installs easily into a 37.5mm x 24.5mm cutout.

How does the hour counter record runtime?

The RL-HM057AD measures the cumulative time a machine is powered and displays it on the LCD. For machines with seat or pressure switches (like riding mowers), the meter starts logging when the switch closes; otherwise it begins when external power is applied.

• Records total hours from 0 to 99,999.
• Begins counting when external power or a closed switch is detected.
• Built-in CR2050 backup battery preserves data if power is disconnected.

What power sources and voltages are supported?

This model accepts a very wide input range, so you can use it with many vehicle, industrial and stationary power systems. It supports both AC and DC supplies without requiring polarity-specific wiring.

• Operates across approximately 5V to 277V (covers common 12V, 24V, 36V, 48V, 110–230V systems).
• Two-pin connection simplifies installation—no separate positive/negative terminals.
• Works with standard power sources found on generators, mowers, pumps and more.

How durable and weatherproof is the meter for outdoor use?

The hour counter is epoxy-encapsulated and rated to IP68, so it resists dust and submersion. That makes it suitable for equipment exposed to rain, splashes and temporary immersion during routine outdoor operations.

• 100% epoxy resin sealing prevents moisture ingress.
• IP68 rating allows normal operation up to 10 meters underwater per the product spec.
• Panel-mount design keeps the display readable while protecting internal electronics.

How simple is installation and maintenance?

The compact unit installs by drilling a panel cutout and snapping the hour meter into place; wiring is straightforward with two identical pins. No frequent maintenance is required beyond occasional visual inspection.

• Panel cut-out size: 37.50mm x 24.50mm (approx. 1.48" x 0.96").
• Snap-in mounting with drill-in panel hole—quick retrofit or new installs.
• Two-year after-sales support and technical assistance included.

Who is this for: The Runleader RL-HM057AD is aimed at owners and technicians of small engines, agricultural equipment, construction tools and industrial machines who need a reliable, easy-to-read total runtime recorder. If you want a low-profile, waterproof hour meter that works with multiple voltages and keeps hours safe on power loss, this model is designed to fit those needs without complex wiring or frequent upkeep.