T4 - Portable multigas detector

T4 - Portable multigas detector

Tax excluded Delivery in 2-4 weeks
Available on order

Custom requests

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  • Ordinary and extraordinary maintenance
  • Installation
  • Workers training
  • Spare parts
  • Calibration
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T4 - Portable multigas detector

T4 - Portable multigas detector


Available on order

The T4 is a portable multi-gas detector with advanced safety features and a rugged, intuitive design, ideal for harsh environments. It offers protection against key gas-related hazards including CO, H2S, flammable gases, and oxygen deficiency. With an 18-hour battery life and a backlit display, it's designed for extended use. An exclusive feature, the TWA Restart, accurately calculates gas exposure over an entire shift. Approved for high safety standards like Zone 1 ATEX, the device includes auditory, visual, and vibration alarms. Easy to operate with a single large button, the T4 is drop and water-resistant, ensuring reliability under any conditions.

Product variants and options

2 gas - Flammable

2 gas - CO

3 gas - H2S

3 gas - CO

3 gas - CO (H2 immune)

4 gas

4 gas - CO (H2 immune)

Oxygen (O2) X X X X X X X
Flammable X X X X X X
Hydrogen sulfide (H2S) X X X
Carbon monoxide (CO) X X X
Carbon monoxide (H2 immune) X X

Gases and ranges



Ossigeno (O2) 0-30% vol. 0,1% vol.
Infiammabile 0-100% LEL 1% LEL
Acido solfidrico (H2S) 0-100 ppm 1 ppm
Monossido di carbonio (CO) 0-1000 ppm 1 ppm

Contact us for information about other possible combinations of gas sensors!

Battery life
18 hour typical runtime, 5.5 hour recharge
Data logging
130 hours of data at 10s intervals, max 3,500
From –20°C to 55°C (from -4°F to 131°F)
H:135 mm L:80 mm P:35 mm
282 g
95dB, vibration integrated, bright red & blue LED’s
Classificazione IP
IP65 e IP67
10-95% RH @ 40°C non-condensing

Specific References

    How does Comastri Distribution's product delivery service work? ...

    Shipping is paid for by us and free of charge for orders over €200 by contracted express courier for shipments throughout Italy and Europe. For shipments to non-EU countries, the service will be charged on the invoice and must be agreed upon in advance with our sales department.  Find out more >

    How long does it take to deliver? ...

    We use an express courier company for shipments throughout Italy and EU countries with the following delivery times, which vary depending on the product. Within each product sheet, you will be able to see the delivery time (days or weeks). On dispatch, the tracking of the order will be shared, in order to follow the tracking of the product until the moment of delivery.

    I need the documentation, the instruction manual, the catalogue of a product or a company. Who can I contact? ...

    A customised catalogue for each product can be downloaded from the shop.

    For any other documentation, instruction manuals or product and company catalogues not available through the site, please contact us. We will be happy to send you the material you are looking for.

    Request material >


    I have a question or problem relating to the installation/service of a product, who can I contact? ...

    The Comastri Distribution technical team is on hand to provide support

    Contact us for assistance >

    How does the technical assistance service work to repair faulty or defective goods?  ...

    In the event of faulty or defective goods, you can take the following steps:

    1.    Download the RMA Form

    2.    Send the form by email to service@comastridistribution.com

    Comastri Distribution staff will take over your case, assess your specific situation and get back to you as soon as possible.

    Once you have received authorisation for sending from the personnel in charge, you can send the equipment. All shipping information will be forwarded by Comastri Distribution personnel.

    If the material is found to be under warranty, Comastri Distribution will take care of the necessary technical assistance.

    If the material is not under warranty, a quotation for service will be sent.


    Contact us >

    I would like to return an item. What are Comastri Distribution's return and refund policies? ...

    We do not accept returns and/or claims unless agreed in advance with our sales department. You will have to send us an email to info@comastridistribution.com within 8 days of receipt of the goods, after which they will be considered accepted.

    Further information >

    What is operational leasing?  ...

    Operational leasing provides the benefit of deferred payment over time, allowing the client to adapt the equipment according to its needs. It also guarantees shortened depreciation of assets, no risk of becoming obsolete at its own expense and, of course, more precise business cost planning. 

    How can I request a quote for operational leasing?  ...

    To request a quote for operational leasing, simply fill in our forum, and you will be emailed immediately

    Download the free quotation tool >

    Which payment methods are accepted?

    The shop accepts the following payment methods: bank transfer, credit card, Paypal.

    In the event of a bank transfer, the order will be processed as soon as the payment is received by the bank. The time taken to receive the transfer may vary from 1 to 3 days.

    Using a credit card or Paypal will result in immediate confirmation of the order.

    The shop accepts the most popular credit card types: Visa, Mastercard, American Express and Discover. Go to the dedicated section for more information on payment methods

    Find out more >

    Is it possible to send a business order with a reference number, under the same conditions, after purchasing from the ecommerce site? ...

    First, register with your company data; you can then send us the same order on your company letterhead, which includes your order number.

    If you wish, you can contact us to agree on a different payment for orders over €1000.

    On receipt of your order in the e-shop, you will be notified of the order confirmation by email, then the payment arrangements will be processed in the client account.

    Find out more >