Thermometers Direct

Comark PDQ 400 - Waterproof Thermometer - Not Medical Thermometer

(Inc. 20% VAT)
(£20.80 Exc. VAT)
(25 Reviews)
57 in stock, immediate despatch
Product Code
Comark Thermometers

Waterproof Thermometer Comark PDQ400

Designed for constant use in humid environments such as kitchens, swimming pools and spas, this handy waterproof pocket digital thermometer will provide fast temperature readings due to its thin probe tip.
  • Accuracy ± 0.5ºC, 1ºF,
  • Waterproof
  • Thin tip probe
  • Response in under 6 seconds
  • Extended range -20º TO 200ºC, -4º to 400ºF
  • Auto power off
  • Maximum temperature hold
  • Slim profile fits flat in pocket
  • Data hold to freeze a reading
  • Withstands constant use in wet or humid conditions
  • NSF
  • Field Calibratable
  • BioCote® anti-microbial protection
Customer Reviews (25)
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25 Reviews:

Perfect thermometers
04 December 2022  | 

I am using these to check water temperatures for cold water swimming. Easy to calibrate with crushed ice bath. Both are extremely accurate, read the temperature within 6 seconds. Small and easy to take with me wherever I am swimming plus waterproof. Very high quality product. Highly recommended

2 of 2 people found this review helpful.
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Comatk pdq400
11 February 2021  | 

Excellent product and service. For open water swimming and works great.

2 of 2 people found this review helpful.
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Amazing product and service
13 December 2017  | 

This thermometer is perfect, just what i wanted.
Its really easy and simple to use, its completely waterproof which is amazing, it makes it so much easier to use and to clean as you don't have to worry about having wet hands or dropping it in the sink.
The packaging was really good quality and the speed of postage was exceptional. Estimated delivery was the Wednesday and it arrived 2 days earlier on the Monday - impressive.
Both the product and service are outstanding and i would highly recommend. Prices are extremely good and competative, im extremely pleased with my purchase.
Many thanks

1 of 1 people found this review helpful.
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Really great thermometer
17 October 2017  | 

Bought this to enable me to test our water temperature at work for H&S regulations. It does the job perfectly well and was a great buy. Would recommend.

4 of 4 people found this review helpful.
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Just the job
27 September 2017  | 

Very accurate and simple to use. Ideal for measuring liquid temperatures.

Arrived promptly and well packaged.

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works fine
17 September 2017  | 

Bought to measure water temp at taps. Does the job.

2 of 2 people found this review helpful.
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Excellent product
14 August 2017  | 

Delivered very quickly and does exactly what I wanted

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Waterproof thermometer
17 April 2017  | 

Excellent product and excellent fast service. Would recommend to anyone

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good service
03 March 2017  | 

The product arrived quickly and works efficiently. A good service.

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18 February 2017  | 

I use this mainly for outdoor swimming- easily attaches to drawstring on trunks and stays inside them. Handy also for checking baby's bath temperature. Great thermometer- it's the second one I've bought having left the first somewhere on a Greek beach (when I really didn't need it anyway!)

6 of 6 people found this review helpful.
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Read all 25 customer reviews...

Delivery Costs

Shipping And Handling

1st Class post up to 14 days for delivery Long delays due to Covid-19

Carrier Service 1-14 days, is an estimated day of delivery is given when you place a order.

Delivery can be from 8.30am to 6pm

Please note all shipping is PER ORDER , NOT PER ITEM

Next day delivery is extra but we can not be held liable for the carriers delaying the (WEEKENDS AND BANK HOILIDAYS ARE NOT INCLUDED IN WORKING DAYS). Highlands and Islands / IV BT, IM TR 21-25, HS, KA27,28, KW1-3, 5-15, PA20-49, 62-77,61,78,PH17-26, 30-44, 49-50, ZE1-3 postcodes takes 48 hour

We must have the order by 3pm to have a chance of getting the order out the same day ( AS LONG AS GOODS ARE IN STOCK) Next day not available for European Orders

ORDERS OVER £65 POST FREE (Excluding European Orders)

For those orders over £65 we will send Post Free. To 1 address if more then 1 address per order, a delivery charge either £6.96 or £3.60 will be added
Once the parcels have left our premises the responsibility for delivery is with the Royal Mail or our Carrier.

We are not responsible for late delivery's that may of happened once the parcel has left us as we will try and get the parcel out to you as fast as we can. Please contact us if any problems, problems do happen but we are always here to help.
Or if you are still waiting for a parcel (over 10 working days Royal Mail) please let us know so we can sort out the problem.
Orders are dispatched by post / carrier to the name and address you have given to us. If we have received incorrect or inadequate information for the delivery of the goods we cannot accept any liability for late or failed delivery as a result of this.

Delivery Schedule We process your order right away. We will normally send your order to you in 2 - 5 business days . International orders are generally received in under 10 days.
Does not Include Trade Orders OR Purchase Orders

A calibrated thermometer if ordered in error / or not wanted can only be returned upto 14 days after purchase because the certificate has a expiry date

Purchase Orders

We accept Orders from Government based purchases, we regularly supply the following organisations

  • Hospitals, PCT's, NHS Foundation Trusts
  • Police Force, Fire Service
  • Councils
  • Prison Service
  • All British Military Forces

There is £50 minimum order value for purchase order

P&P on all Purchase Orders under £65 (ex Vat) £5.42+VAT
P&P will be free on Orders over £65 (ex vat)

Send your order by Email:-

Payment must be made within 30 days by BACS or Cheque