The Bulldog TR21 GPS Tracker and electronic locking solution is the ultimate self contained robust and high powered tracker with built in electronic locking cord. The IP67 casing has no external buttons and is able to withstand harsh environments and prolonged use in the most demanding environments.

The integrated locking cord is locked in placed within the tracker unit and released by way of RFID tag or via remote command from our tracking platform or smartphone app. All actions undertaken on the lock are quickly relayed back to you so you can establish when the lock was released, where and by whom plus the exact GPS co-ordinates. Whilst primarily designed for door lock management in various land and sea transportation units such as box trucks, trailers and containers, the TR21 is able to secure any device that needs locking, disabling or monitoring.

The TR21 has security and reliability built in with any attempt to tamper with the tracker or cut the locking cord being reported back as an alarm to the end user. The inbuilt 14,000 mAh battery gives up to 78 days usage and simple magnetic fast charging function means the TR21 can spend months on the road and just hours being charged. 

Using inbuilt sensors, the TR21 can detect movement / vibration to prolong battery life so when the trailer or other asst is stationery the tracker sleeps. Once movement is detected the TR21 wakes up and starts transmitting critical data.

Unlike almost every other trackers where you need to buy additional wire's, SIM cards, gizmo's or gadgets to get up and running, the Bulldog TR21 has been designed with you in mind and includes everything needed to be tracking in no time. 

The following fees are paid upon registration. This includes mobile network data charges, access to our tracking platform via smartphone and web browser:

Monthly £10.99 per month (paid 6 months in advance then monthly)

1 year in advance £120.89 (Paid 12 months in advance - equivalent to £10.07 per month)

2 years in advance £230.79 (Paid 24 months in advance - equivalent to £9.62 per month)

3 Axis Accelerometer Sensor
Internal Yes
GPS Antenna
Internal Yes
GPS Chip
Type / Sensitivity. u-Blox 7 / -162dB. AGPS
GSM Frequency
GSM MHz 850 / 900 / 1800 / 1900
Inbuilt Battery Capacity
mAh 1400
Input Voltage
Volts 9V via magnetic charger
Internal Memory
MB Buffer 8
IP Rating
IP 66
Construction Type ABS
Operating Humidity
Percentage 5 to 95
Operating Temperature
Celsius -15 to +65
Position Accuracy
Metres 2.5
Power Consumption (Deep Sleep)
Amps 50uA
Grammes 800
Working Time
Hours Up to 78 days
MM 112mm x 195mm x 37 mm

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Bulldog TR21 Tracker

  • Brand: Bulldog
  • Product Code: TR21
  • Availability: In Stock
  • £349.44

  • Ex Tax: £291.20