Hilmor 1950217 Wireless Vacuum Gauge is a pro-grade Bluetooth micron gauge that lets techs verify deep vacuum accurately—on the handheld and your phone—so charging starts with confidence. Built tough with a foldable hook and magnet, it’s made for real site work—too easy.

Key features & trade benefits

• ±10 microns / ±5% accuracy — trust your readings when you’re chasing moisture or micro-leaks, reducing call-backs.
• 1-micron resolution to 2,000 microns — see stabilisation clearly during a standing vacuum test for pass/fail decisions.
• Wireless, 10 m line-of-sight range — monitor from the ground while the gauge hangs on the unit. Safer and faster workflows.
• Programmable high/low micron alarms — audible alerts at your target (e.g., 500 microns) so you’re not constantly staring at the screen.
• LED-backlit display + 0.5 s refresh — live, legible data in plant rooms or at dusk—bloody good when daylight’s fading.
• Jobsite-ready build — foldable hook + magnet for hands-free mounting; rated to 800 PSI momentary overpressure.
• Long battery life — up to 80 hrs on the handheld, 40 hrs on the sensor (backlight off), so it keeps up with long days.

Why this wireless micron gauge matters

Real-world: on a humid Sydney roof, we pulled a ducted split down with wide-bore hoses. The Hilmor 1950217 settled at ~420 microns and held steady for the standing test—alarm set at 500. No moisture hiss, no rebound. Charge went in and the system was purring. That’s what separates a fair dinkum evacuation from a guess. For guidance, AIRAH’s Refrigerant Handling Code of Practice recommends evacuating to <500 microns before charging.

Browse the full range in our Vacuum Gauges category for alternatives and bundles.

Pro tip

Mount the sensor at the system (not at the pump) via a core removal tool, isolate with the ball valve, then perform a standing vacuum test. Pair with large-bore evacuation hoses to hit target microns quicker—no worries. (See Related Products below.)

Compatibility & system info

• Connection: 1/4″ male flare on sensor; includes 1/4″ female flare adaptor.
• Readout units: micron, mTorr, Torr, mmHg, mbar, kPa, Pa.
• Range / resolution: 5–10,000 microns; 1-micron resolution to 2,000 microns (then step). Refresh every 0.5 s.
• Use case: Suitable for evacuation verification on residential and light-comm systems, including R32/R410A splits (measures vacuum, not refrigerant). Target <500 microns per AIRAH before charging.

Local conditions (AU)

From Brisbane summer humidity to Melbourne winter chill, temperature swings can mask moisture. The 1950217’s temperature compensation (0–50 °C) and high accuracy help you make the call with confidence—she’ll be right.

What’s included

• Remote sensor (1/4″ MFL) — 3 × AAA batteries
• Handheld display — 3 × AA batteries
• 1/4″ female flare adaptor
• Protective case
• 12-month warranty

See the product page for full contents list and current availability.

Specifications

All specs per Hilmor/retailer listing.

Warranty & returns

Backed by manufacturer’s warranty. For delivery windows, returns and conditions, see our Shipping & Returns.

FAQs

Q: What micron target should I use?
In Australia, AIRAH’s Refrigerant Handling Code of Practice recommends evacuating to less than 500 microns before charging. Set the alarm accordingly.

Q: Where should I place the sensor?
At the system, via a core removal tool, not at the pump. Isolate with the tool’s valve and run a standing vacuum test for a reliable pass/fail.

Q: Does it work on R32/A2L systems?
Yes. The gauge measures vacuum (absolute pressure) and doesn’t contact refrigerant in use. Follow site safety and standards (e.g., AS/NZS 5149).

Q: Can I monitor remotely?
Yes—wireless range is up to 10 m line-of-sight; use the handheld or your smart device to track pull-down without hovering over the unit.

Related products

• Want faster pull-downs? The AccuTools TruBlu Starter Evacuation Kit pairs brilliantly with a micron gauge to hit target microns sooner.
• Keep your pump performing: Fieldpiece High Grade Vacuum Pump Oil helps achieve deeper vacuums and longer pump life.
• Best practice hookup: Hilmor 5/16″ Valve Core Removal Tool for accurate, restriction-free readings at the service port.