Runleader RL-HM038AD Digital Hour Meter — LCD, 5–277V AC/DC, IP68 Epoxy-Sealed Backup Battery

Use this sealed, epoxy-encapsulated hour meter to track maintenance intervals and total operating hours for engines, generators, mowers, and industrial equipment. The RL-HM038AD accepts a broad input voltage (5–277V AC/DC), mounts with a simple panel cut-out, and displays hours up to 99,999 with resettable session timers and a backup battery for data retention. Its IP68-resistant construction stands up to wet environments where many small meters would fail.

How does the RL-HM038AD record operating hours?

The meter starts counting when it senses external power or an activated pressure switch on compatible equipment. It stores a cumulative total and also offers two separate resettable session timers for short-term tracking during a single work period.

• Records total hours from 0 to 99,999
• Two resettable running-hour counters for shifts or service intervals
• Starts via power input or pressure-switch activation for some ride-on mowers

Will it work with my machine’s voltage system?

Yes — the RL-HM038AD is designed for exceptional voltage flexibility and accepts many common DC and AC supplies. The meter’s wide-range input eliminates the need for voltage converters for most vehicles and equipment.

• Accepts AC or DC 5V to 277V
• Compatible with common voltages: 12V, 24V, 36V, 48V, 72V, 90V, 110–230V and more
• Only two connection pins simplify installation; polarity is not critical

How durable and weather-resistant is this hour meter?

The RL-HM038AD is fully epoxy-encapsulated and rated to meet IP68 standards, making it suitable for wet or dusty conditions where handheld or exposed meters would fail. It will run normally after brief submersion and resists corrosion from moisture and contaminants.

• 100% epoxy resin encapsulation for moisture protection
• IP68-level water resistance suitable for submersion
• Built to withstand harsh outdoor and industrial environments

How easy is installation and how is data preserved?

Install the RL-HM038AD by drilling a panel cut-out and snapping the meter into place; the cut-out size is compact for tight instrument panels. A built-in CR2050 backup battery preserves displayed hour data when external power is removed.

• Panel cut-out: 37.50mm × 24.50mm (1.48" × 0.96") for drill-and-snap mounting
• Only two connection pins for power—no separate positive/negative required
• Internal CR2050 (360 mAh) battery maintains display memory

Who is this for: The Runleader RL-HM038AD suits owners and technicians who need a rugged, easy-to-install hour counter for small engines, generators, agricultural and grounds-care equipment, construction machinery, and marine or industrial systems. Choose this meter when you want wide voltage compatibility, weather resistance, compact panel mounting, and clear LCD readouts to schedule maintenance and track equipment usage without complex wiring or external converters.