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Elitech SMG-1L Refrigeration HVAC Digital Pressure Gauge for 87+ Refrigerants with Backlight -14.5-500 PSI - Elitech Technology, Inc.

Elitech SMG-1L Refrigeration HVAC Digital Pressure Gauge for 87+ Refrigerants with Backlight -14.5-500 PSI

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  • Free Shipping Over $49

    Shipping within 24 hours. Free Standard Shipping On Orders Over $49 (US Only): 3-5 Days for delivery.


    Not the right fit? No worries. We'll arrange pick up and a full refund within 7 days including the delivery fee.


    Quality comes first and our products are designed to last.

Digital High-Pressure Gauge, SMG series are professionally digital gauges used for maintaining, monitoring and evacuating refrigeration systems and charging refrigerants. The gauges can measure system pressure and display various parameters such as the evaporation temperature of the corresponding refrigerant. They have a backlight, auto-off, unit switch, over-range alarm, and other functions.


  • Six units switchable: MPa, kPa, bar, psi, kg/cm², cmHg
  • Pressure measuring range: -0.100 ~ 3.448MPa (-14.5-500 psi)
  • Resolution: 0.5psi
  • Accuracy: +0.5%FS
  • Sampling Rate: 1s
  • Temperature Unit: °C/°F
  • Battery: 3 AAA batteries
  • Battery Life: 6 months
  • Service 1-year warranty. 30 days free & easy return 

User Manual

  • When pressure is over measuring range: -OL- shows, backlight flashes, and ALM symbol lights.
  • Please use the ZERO button to zero the gauge before connecting it to the system.
  • The AUTO symbol will show on the screen if the Auto OFF function is enabled.
LCD Screen& Blue Backlight Display
  • The pressure gauge's digital backlight display allows you to read out easily even at the night.
  • Partition display for different measurements, direct readings for all measurements.
  • Adjustable backlight off time: 3s,4s,5s,10s,15s or always on
  • Selectable auto-off time: 10min (default), 20min,30min,40min or disable
  • Operation
  • Backlight: When the gauge is ON, press the power button to light up the backlight.
  • Max/Min Memory and Clear: Light up backlight and press power button to display MAX symbol & value, then hold ZERO button until 8888 shows on the screen, to clear current Max value.
  • When the backlight is on, press the power button twice to display MIN symbol & value, then hold ZERO button until 8888 shows on screen to clear the current Min value.
  • Temperature Unit: Press and hold SET button until AUTO shows on screen. press power button once until C-F shows, then use SET or ZERO button to switch between ℃ and ℉.
  • Pressure Unit: Press and hold SET button until AUTO shows on screen. press power button twice until UNIT shows, then use SET or ZERO button to switch between pressure units.

Compatible Refrigerants

  • R114, R12, R123, R1234yf, R1234ze, R124, R125,
  • R13, R134a, R14, R141B, R142B, R143A, R152A,
  • R161, 170, R21, R218, R22, R23, R290, R32, R290,
  • R32, R401A, R401B, R401C, R402A, R409B, R41,
  • R410A, R410B, R412A, R413A, R414A, R414B, R415B,
  • R416A, R417A, R419A, R420A, R421A, R421B, R422A,
  • R422B, R422C, R422D, R423A, R427A, R437A, R441A,
  • R442A, R443A, R444A, R449A, R449B, R450A, R452A,
  • R455A, R50, R500, R502, R503, R504, R507, 508A,R508B,
  • R509A, R513A, R600, R600a, R601, R601a, R740, R744

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return results from our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper. However, you will receive a refund more quickly in many cases. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please email support@elitechus.com.

We'll notify you via email of your refund once we've received and processed the returned item.

Return Shipping Address: Elitech Technology, Inc. 2528 Qume Drive #2, San Jose, CA 95131, United States

Tel: (+1)4088444070

Shipping: We can ship to virtually any address in the world.

Note that there are restrictions on some products, and some products cannot be shipped to international destinations. When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose.

Depending on your chosen shipping provider, shipping date estimates may appear on the shipping quotes page. Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
United States: Shipping within 24 hours.

Free Standard Shipping in the US: 3-5 Business Days for delivery.

Next Day Shipping Service Available in the US: Orders placed before 12:00 pm PST will be shipped on the same day! The Next Day shipping on Friday will be shipped on next Monday(Since we don't work at the weekend).

Worldwide: Fast Worldwide DHL Shipping.

2-3 business days to prepare the items and 10-14 business days for delivery. The buyer covers tax.

Note: ISO 17025 certified version data loggers are PRE-SALE only.

Lead time: 2 weeks.

The shipping cost will be shown according to the weights and countries at the checkout. If your items were lost in transit, please email support@elitechus.com.

We will send you a replacement or a refund.

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