We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Transparent digital pocket thermometer with long stem

REED INSTRUMENTS

REED INSTRUMENTS R2222-NIST Digital Pocket Thermometer 4-13/20" Stem -40

SKU CH-NWA2-NW7QN

Digital pocket thermometer with NIST certification and max/min memory function

  • Product colorTransparent
  • NIST-certified accuracy for trusted readings
  • Max/min memory captures temperature extremes
  • 4-13/20" stem reaches into tight spaces
  • Measures down to -40 for freezing environments
  • Transparent housing lets you check display at a glance

Digital Pocket Thermometer with NIST Certification

The REED INSTRUMENTS R2222-NIST is a compact digital thermometer designed for HVAC technicians and field service professionals who require traceable temperature verification. Its transparent housing protects the display while the stem reaches into ducts, pipes or equipment. The included NIST certificate confirms calibration accuracy for quality-assurance programmes.

Stem Length and Mounting Flexibility

A 4-13/20 inch stem inserts directly into the medium being measured, eliminating the need for separate probes or extension cables. The pocket-sized body fits in a shirt pocket or tool pouch, freeing both hands for system adjustments. No external power supply or mounting hardware is required beyond the battery already installed.

Sustained Field Operation

The instrument maintains its calibrated accuracy during extended measurement sessions rather than drifting after a quick spot check. Max and Min memory retains the highest and lowest readings across a full service call, so technicians can document temperature extremes without constant monitoring. The transparent case resists condensation in humid environments.

How it compares

Measured against everything we stock in Thermostats & Thermostat Accessories, at today’s prices. Recalculated every night.

Price $146.99
Pricier than about 75% of the 286 comparable items (median $78.49).

Specifications

Product
Brand nameREED INSTRUMENTS
Product colorTransparent

Questions about this item

How long does the NIST certificate stay valid under daily use?

The NIST certificate ships with the thermometer and does not expire from daily use; recalibration intervals depend on your quality programme.

Does the transparent housing get hot or make noise during continuous measurement?

The thermometer is a passive stem device with no fan or heater, so it generates no audible noise and its body remains at ambient temperature.

What probe diameter fits the 4-13/20 inch stem for a secure mount?

The stem itself is the probe at 4-13/20 inches long; no separate probe or fitting is required for it to operate.

More in Thermostats & Thermostat Accessories

Similar items