Tinytag Plus2 Temperature and Humidity

TinyTag Plus 2 data loggers are reliable and trusted RH and Temperature data loggers built for the most demanding requirements of museums, galleries, archives and more. The robust waterproof casing (IP68) allows the logger to be used outdoors.

  • Temp/RH with probe (9903-1555 only)
  • Built in sensors (9903-1550 only)
  • Case waterproof to IP68
  • User programmable alarms
  • 32,000 reading capacity
  • High reading resolution
  • Fast data offload
  • User-replaceable battery with low battery monitor
  • Coated RH sensor that has good resistance to moisture and condensation, ensuring measurement reliability
Temperature and humidity logger.
  • This unit records temperature and humidity using self-contained sensors. It can record temperatures between -25 and +85°C and relative humidity between 0 to 100%. The unit is waterproof, so it can be used outside.
External Probe
  • The external probe unit (9903-1555), has a temperature and relative humidity probe with a 1.5m cable length.

  • Windows Software - 9903-0009, and USB cable 9903-USBC.

See specification tab for more details.

Read More
Tinytag Plus 2 TGP-4505 RH/Temp Data Logger with external probe
P9903-1555 9903-1555
Pack Size: Each Price: £165.00 ex VAT In Stock 48hr
Tinytag Plus TGP-4500 RH/Temp Data Logger 0-100% & -40 to +85C
P9903-1550 9903-1550
Pack Size: Each Price: £159.00 ex VAT In Stock
Accessories to fit
Outdoor Cover for Tinytag Data Logger
Pack Size: Price: £41.00 ex VAT Low Stock
Tinytag Service Kit
P9903-9500 9903-9500
Pack Size: Each Price: £5.00 ex VAT In Stock
Tinytag Explorer Software For Windows
P9903-0009 9903-0009
Pack Size: Each Price: £49.00 ex VAT In Stock
Tinytag USB Cable
P9903-USBC 9903-USBC
Pack Size: Each Price: £20.00 ex VAT In Stock
Datalogger PC Cable for Tiny Tag and View (not USB)
P9903-0007 9903-0007
Pack Size: Each Price: £5.00 ex VAT Out Of Stock - Notify when back in stock
Calibration Certificate Single (Temp or RH) Channel Tinytag/Tinytalk
P9901-9000 9901-9000
Pack Size: Each Price: Call Made to Order
Calibration Certificate Dual (Temp & RH) Channel Tinytag/Tinytalk
P9901-9002 9901-9002
Pack Size: Each Price: Call Made to Order

TinyTag Model Numbers TGP-4505 (9903-1555) & TGP-4500 (9903-1550)

  • Total Reading Capacity 32,000 readings
  • Memory type Non Volatile
  • Trigger Start Magnetic Switch
  • Delayed Start Relative / Absolute(up to 45 days)
  • Stop Options When full, After n Readings, Never (overwrite oldest data)
  • Reading Types Actual, Min, Max
  • Logging Interval 1 sec to 10 days
  • Alarms 2 fully programmable; latchable


  • Reading Range -25°C to +85°C (-13°F to +185°F)
  • Reading Resolution 0.01°C or better

    Relative Humidity

  • Reading Range 0% to 100% RH
  • Accuracy ±3.0% at 25°C / 77°F
  • Reading Resolution Better than 0.3% RH

  • IP Rating IP68 water-proof (see notes)
  • Operational Range* -40°C to +85°C (-40°F to +185°F)
  • Case Dimensions
  • Height 34mm / 1.34”
  • Width 57mm / 2.25”
  • Depth 80mm / 3.15”
  • Weight 110g / 3.9oz

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