Welcome to Test4Less

FREE SHIPPING

Available for orders over £100

CREDIT ACCOUNT

Apply for a credit account

GIFTS & REWARDS

Free gifts and exclusive benefits

TRAINING COURSES

Elevate your skills with us

ON SALE

Exclusive offers, shop today

FREE SHIPPING

For all orders over £100

CHAT | EMAIL | PHONE

Professional support

FREE GIFTS

On many products

CUSTOMER REWARDS

Enjoy Exclusive Benefits

BOOK YOUR TRAINING

Elevate Your Skills

Manufacturers -

Product categories -

  • Show more

Price

Shop

Showing 1–12 of 40 results

  • Testo 174H BT Mini Temperature & Humidity Data Logger
    Usually Ships In 3 to 5 Business Days

    Testo 174H BT Mini Temperature & Humidity Data Logger

    £115.00 (ex VAT)
    £138.00 (inc VAT)
    • Temperature range: -20 °C to +70 °C with ±0.5 °C accuracy
    • Humidity range: 0–100% RH with ±3% accuracy
    • Bluetooth-enabled for use with the Testo Smart App
    • Automatic data backup ensures continuous data logging

  • Testo 174H Mini Temperature & Humidity Data Logger
    Usually Ships In 3 to 5 Business Days

    Testo 174H Mini Temperature & Humidity Data Logger

    £99.00 (ex VAT)
    £118.80 (inc VAT)
    • Tracks temperature (-20 °C to +70 °C) and humidity (0–100% RH).
    • Stores 16,000 readings with USB-C data transfer.
    • Compact, durable, and user-friendly design.
    • Automatic data backup ensures reliability.

  • Testo 174T BT Mini Temperature Data Logger
    Usually Ships In 3 to 5 Business Days

    Testo 174T BT Mini Temperature Data Logger

    £99.00 (ex VAT)
    £118.80 (inc VAT)
    • Bluetooth-enabled data logger for easy temperature monitoring.
    • Measures accurately from -30 °C to +70 °C.
    • Robust, IP65-rated design with long battery life.
    • Internal memory stores 16,000 readings securely.

  • Testo 174T Mini Temperature Data Logger
    Usually Ships In 3 to 5 Business Days

    Testo 174T Mini Temperature Data Logger

    £75.00 (ex VAT)
    £90.00 (inc VAT)
    • Measures temperature between -30 °C and +70 °C
    • Long battery life with secure data backup features
    • Stores 16,000 measurements in IP65-protected housing
    • Includes USB-C connectivity and professional reporting software

  • Usually Ships In 3 to 5 Business Days

    Testo 300 Smart Upgrade Kit

    £233.75 (ex VAT)
    £280.50 (inc VAT)
    • CO sensor (H2-compensated) with up to 8,000ppm measurement
    • Wireless connection to four Testo Smart Probes
    • Smart App second-screen feature for real-time data monitoring
    • Easy data transfer through QR code output

  • Testo Winter PromoTesto 300+ Flue Gas Analyser
    Usually Ships In 6 to 13 Business Days

    Testo 300+ Flue Gas Analyser (Choice of Sensor)

    £519.35 (ex VAT)
    £623.22 (inc VAT)
    • Advanced combustion analyser for boilers
    • Smart-touch display for intuitive operation
    • Measures multiple gas parameters simultaneously
    • Robust design with magnetic holder and Bluetooth connectivity
    This product has multiple variants. The options may be chosen on the product page

  • Testo Winter PromoTesto 300+ Flue Gas Analyser Advanced Kit
    Usually Ships In 3 to 5 Business Days

    Testo 300+ Flue Gas Analyser Advanced Kit (Choice of Sensor)

    £824.50 (ex VAT)
    £989.40 (inc VAT)
    • Measures O2, CO, NO, draught, pressure, and temperature
    • Equipped with Bluetooth for simultaneous multi-gas testing
    • 5-year warranty and long-lasting battery for reliable use
    • Advanced touchscreen for detailed, real-time data display
    This product has multiple variants. The options may be chosen on the product page

  • Testo Winter PromoTesto 300+ Flue Gas Analyser Heat pump kit
    In Stock - Express Delivery Available

    Testo 300+ Flue Gas Analyser Smart Heat Pump Kit

    £918.00 (ex VAT)
    £1,101.60 (inc VAT)
    • CO measurement up to 8,000ppm
    • Bluetooth capability for multi-probe usage
    • 5-year warranty and long battery life
    • Full kit with Testo 550i manifold and Bluetooth accessories

  • Testo Winter Promo
    In Stock - Express Delivery Available

    Testo 300+ Flue Gas Analyser Smart Kit (Choice of Sensor)

    £891.65 (ex VAT)
    £1,069.98 (inc VAT)
    • Measures CO up to 8,000 ppm, oxygen, and optional nitric oxide
    • Includes Bluetooth-enabled accessories for simultaneous measurements
    • Five-year sensor lifespan with reduced servicing requirements
    • Provides instant reports and remote monitoring via the Testo Smart App
    This product has multiple variants. The options may be chosen on the product page

  • Testo Winter PromoTesto 300+ Standard Kit
    Usually Ships In 3 to 5 Business Days

    Testo 300+ Flue Gas Analyser Standard Kit

    £758.00 (ex VAT)
    £909.60 (inc VAT)
    • CO sensor measures up to 8,000 ppm with H₂ compensation
    • 5-inch touchscreen with smart Bluetooth connectivity
    • Parallel measurements with Testo Smart Probes
    • 10-hour battery life and 5-year sensor lifespan

  • Testo Winter Promo
    In Stock - Express Delivery Available

    Testo 300+ Flue Gas Analyser Ultra Smart Kit (Choice of Sensor)

    £934.15 (ex VAT)
    £1,120.98 (inc VAT)
    • Measures O2, CO up to 8,000 ppm, and optional NO for gas analysis
    • Equipped with Testo Smart App for remote monitoring and reporting
    • Bluetooth connectivity for up to 4 probes
    • 5-year sensor lifespan and a 10-hour battery life
    This product has multiple variants. The options may be chosen on the product page

  • Testo Winter PromoTest 300LL Printer
    Usually Ships In 3 to 5 Business Days

    Testo 300LL Longlife Flue Gas Analyser Printer Kit (Choice of Sensor)

    £1,519.00 (ex VAT)
    £1,822.80 (inc VAT)
    • Measures CO up to 30,000ppm with H2 compensation
    • 5” touchscreen for customisable data analysis
    • Includes wireless printer and reporting software
    • Durable design with four-year warranty
    This product has multiple variants. The options may be chosen on the product page