Runleader Digital Maintenance Hour Meter 5-277V AC/DC, IP68 Waterproof with EEPROM Backup

The Runleader RL-HM038AG-H is a compact digital maintenance hour meter that tracks total running hours across AC or DC supplies from 5V to 277V and stores data even when power is off.

Designed for outdoor and industrial equipment, this meter offers a wide input-voltage range, waterproof construction, and an EEPROM-backed memory so you can monitor engine or machine runtime and plan service intervals without losing data. It’s compatible with many lawn tractors, generators, and other petrol or electric powered machines and includes an optional oil-change reminder to simplify maintenance scheduling.

How does the hour meter record and keep runtime data?

The RL-HM038AG-H counts hours while the machine is running and displays the accumulated time continuously—even when the host vehicle or device is switched off. An internal CR2050 360mAh battery and EEPROM memory preserve the reading and settings for long-term reliability.

• Records total hours from 0 to 99,999 hours
• Built-in CR2050 battery for display retention
• EEPROM stores data and prevents loss during power loss
• Counts when machine voltage or spark-plug signal is present

What voltage and equipment is this hour meter compatible with?

This hour meter accepts a very broad input range, so it works with both low-voltage DC systems and high-voltage AC sources commonly found on generators and industrial equipment. It’s suitable for many consumer and commercial machines, making it a flexible maintenance tool.

• Accepts AC/DC 5V up to 277V input voltage
• Works with spark-plug trigger on gasoline engines
• Compatible examples: multiple lawn mower and generator models
• Simple connection to machine power or ignition signal

Is the unit durable and weatherproof for outdoor use?

The meter’s casing is fully encapsulated in epoxy resin to resist moisture and dust, achieving an IP68-level resilience. That means it operates reliably in wet environments and can tolerate immersion to depths specified by the standard, so it’s suited to exposed installations on outdoor equipment.

• 100% epoxy resin potting for protection
• IP68-rated water resistance for harsh conditions
• Robust for use on lawnmowers, tractors, and generators
• Panel-mounted design with secure fitment

How do you install and use the RL-HM038AG-H on my machine?

Installation is straightforward: cut a panel opening to the specified size, snap the unit into place, and wire it to the machine’s running-power source or ignition signal. The meter also offers a resettable oil-change reminder that alerts you at regular hour intervals to help maintain equipment longevity.

• Panel cut-out: 37.50mm × 24.50mm (1.48" × 0.96")
• Mounts by drill-in and snap-in for secure fit
• Resettable oil-change reminder every 50 hours
• Begins counting when power or spark signal is present

Who is this for: Technicians, landscapers, fleet managers, and DIY equipment owners who need a reliable, low-maintenance runtime monitor for outdoor engines and electrical machines. If you want a straightforward way to log operating hours, keep maintenance on schedule, and protect equipment value without frequent battery concerns, this Runleader hour meter is a practical choice.