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header-product Testo 835-T1 Industrial Thermometer, -30 to 600 °C, Built-in Display, AA Battery, 193×166×63 mm

Testo 835-T1 Industrial Thermometer, -30 to 600 °C, Built-in Display, AA Battery, 193×166×63 mm

Testo 835-T1 Thermometer -30 to 600 °C Photo 1
Testo 835-T1 Thermometer -30 to 600 °C Photo 2
Testo 835-T1 Thermometer -30 to 600 °C Photo 1
Testo 835-T1 Thermometer -30 to 600 °C Photo 2

Short description

Testo 835-T1 is a handheld industrial thermometer with a built-in display, measuring temperatures from -30 to 600 °C. The unit uses °C scale and is powered by AA battery. Housing dimensions are 193 × 166 × 63 mm and the casing is black and grey. Suitable for HVAC, refrigeration, process checks and maintenance tasks.
Warranty: 2 Years
SKU: 1409777
Manufacturer: testo
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Product information

Description

The Testo 835-T1 Industrial Thermometer is a handheld infrared thermometer with a built-in display, designed for temperature measurement from -30 °C to 600 °C. The unit uses the Celsius scale and is powered by a standard AA battery. Its compact housing (193 × 166 × 63 mm) and black-and-grey casing provide a practical tool for HVAC, refrigeration, process checks and maintenance tasks where non-contact and contact temperature readings are required.

Advantages

The device combines infrared and contact measurement capability, enabling users to measure surface temperatures non-contact and to connect optional sensors for direct-contact readings. A 4-point laser marking indicates the measuring area to reduce incorrect measurements, while 50:1 optics let you measure small targets from a greater distance. The backlit display and simple menu with a joystick make on-site operation straightforward. Data storage for up to 200 readings, min/max values, adjustable thresholds and visual and acoustic alarms support inspection and fault-finding workflows.

Suitable for

  • HVAC system diagnostics and maintenance
  • Refrigeration inspections and monitoring
  • Industrial process checks and quality control
  • Surface temperature surveys and building envelope checks

Key specifications

  • Measurement range: -30 °C to 600 °C
  • Temperature scale: Celsius (°C)
  • Optics / distance-to-spot ratio: 50:1
  • Laser targeting: 4-point laser marking
  • Display: integrated backlit display for readings and menu
  • Power supply: AA battery
  • Housing dimensions: 193 × 166 × 63 mm
  • Color: black and grey casing
  • Data memory: up to 200 stored measurements; min/max recording and adjustable thresholds with alarms

How to use

Aim the infrared thermometer at the target surface, ensuring the measuring distance corresponds to the optics (50:1) so the target area is fully within the measuring spot. Use the 4-point laser to position the instrument and read values on the integrated backlit display. For contact measurements, connect an optional temperature probe to the device and follow the on-screen menu to switch to contact mode and select the appropriate emissivity setting. Use the joystick to navigate the menu, set thresholds, and save measurements as required.

Usage recommendations

For accurate non-contact readings, ensure the target area is larger than the measured spot and select the correct emissivity value for the material. Use the contact probe when surface emissivity is uncertain or when more precise contact measurement is required. Store recorded data and analyze it with the manufacturer’s software for trend checks and detailed reporting.

All features
Built-in display: A display which is part of the product, so you do not need to attach another display.
Yes
Temperature measurement units: The units of themperature which device supports.
°C
Housing colour: The colour of the housing, which is the rigid casing that encloses and protects a piece of moving or delicate equipment.
Black, Grey
Measurement accuracy:
1 %

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.514 kg
Height: The measurement of the product from head to foot or from base to top.
63 mm
Depth: The distance from the front to the back of something.
166 mm
Width: The measurement or extent of something from side to side.
193 mm

Power

Auto power off: The device switches itself off automatically after a certain activity, or after a certain time of inactivity.
Yes
Number of batteries supported: The number of batteries that can be used with the product.
3
Battery type: Description of battery supplied with the product, such battery form factor (e.g. AA/AAA).
AA

Features

Certification:
CE
Backlight display: A backlight is a form of illumination used in liquid crystal displays (LCDs). As LCDs do not produce light themselves - unlike for example Cathode ray tube (CRT) displays - they need illumination (ambient light or a special light source) to produce a visible image. Backlights are used in small displays to increase readability in low light conditions such as in watches, and in computer displays and LCD televisions to produce light in a manner similar to a CRT display.
Yes
Temperature measurement range: The minimum and maximum temperatures that can be measured.
-30 - 600

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Customer reviews

Customer questions

FAQ

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All testo products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized testo service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

Where can I download the instructions for Testo 835-T1 Thermometer -30 to 600 °C?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy
We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008
AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.