Runleader Digital Hour Meter RL-HM057AD 5–277V LCD Hour Counter, IP68 Waterproof, Battery-Backed

The Runleader RL-HM057AD is a compact digital hour counter with an LCD that records running time up to 99,999 hours and runs from a very wide 5–277V supply.

Designed for engines, generators, lawn equipment and other powered machinery, this sealed hour meter delivers a clear numeric display, long-term time logging and rugged water resistance. Its wide input range accepts both AC and DC supplies commonly found on automotive, industrial and outdoor equipment, while an internal battery preserves the reading when power is removed. The unit mounts into a small panel opening and offers straightforward two-pin hookup for quick installation.

How does the RL-HM057AD keep track of machine hours?

The meter counts accumulated operating time whenever the connected machine is powered and, on some vehicles, when a seat pressure switch is engaged. It updates the LCD and stores totals reliably so you can monitor usage and maintenance intervals.

• Records elapsed run time from 0 up to 99,999 hours.
• Activates when the unit receives external power or when a pressure switch closes on certain mowers.
• Internal CR2050 battery preserves the displayed total when external power is off.

What electrical systems will this hour meter work with?

This model accepts a very broad range of input voltages, making it suitable for many vehicles and equipment types. It supports both AC and DC supplies, removing the need for separate voltage converters in most installations.

• Operates on 5V to 277V input, covering 12V, 24V, 36V, 48V, 72V, 90V, 110V, 120V, 220V and 230V systems.
• Two identical connection pins simplify wiring—polarity is not distinguished.
• Works on common automotive, marine, industrial and small-engine electrical systems.

Is the RL-HM057AD durable for outdoor and wet environments?

The housing is fully epoxy-potted for strong environmental protection, meeting IP68 resistance so it continues to run in wet conditions. That makes it a good choice for equipment exposed to rain, wash-downs or occasional submersion.

• 100% epoxy resin construction provides moisture and dust sealing.
• IP68-rated performance—built to withstand immersion per the standard.
• Compact, snap-in design reduces gaps that could allow contaminants in.

How do you mount and service this hour meter?

Installation is done by cutting a small panel opening and pressing the unit into place; the simple two-pin electrical connection keeps setup fast. For peace of mind, Runleader offers technical support and a two-year after-sales warranty.

• Panel cut-out dimension: 37.50mm × 24.50mm (1.48" × 0.96").
• Snap-in mounting after drilling the panel opening—no extra hardware required.
• Two-year support and accessible technical assistance from the manufacturer.

Who is this for: The Runleader RL-HM057AD fits owners and technicians who need a reliable, weather-resistant hour meter for outdoor power equipment, generators, construction machinery or fleet vehicles. If you want a straightforward, wide-voltage hour counter with a clear LCD, durable epoxy sealing and easy panel-mount installation, this model is a practical choice for monitoring service intervals, usage tracking and equipment management.