Main Page > Autonomous Trackers > TAT240 > TAT240 Manual > TAT240 General description

TAT240 is a tamper-proof, 4G LTE (CAT1), 3G/2G fallback, GNSS, Bluetooth® device for asset tracking and maximum protection against thefts of containers, and trailers, as well as it could be used in a wide range of applications from valuable goods to tools tracking. The tamper detection feature of TAT240 ensures significantly improved protection of the assets.

Package Contents

TAT240 device is supplied to the customer in a cardboard box.

Basic characteristics

GSM / GPRS / GNSS features:

Teltonika TM2500 with Quectel EG915U-EU or Quectel EG915U-LA
LTE Cat 1/GSM/GPRS/GNSS/BLUETOOTH® wireless technology
GPRS Multi-Slot Class 12 (up to 85.6 kbps);
Up to -165 dBm GNSS receiver sensitivity;
SMS (text, data).

2G bands:

TAT240-QJIBC: EG915U-EU GSM: B2/B3/B5/B8

4G LTE Cat 1 bands:

TAT240-QJIBC: EG915U-EU LTE-FDD: B1/B3/B5/B7/B8/B20/B28

Data transfer:

LTE: LTE FDD : Max 10Mbps (DL)/Max 5Mbps (UL)
GSM: GPRS: Max 85.6Kbps (DL)/Max 85.6Kbps (UL)

Hardware features:

Built-in movement sensor;
Built-in Ultra-low-power Bluetooth® BlueNRG-232;
Internal High Gain GNSS antenna;
Internal High Gain GSM antenna;
128 MB Flash (220‘000 records);
2200 mAh extremely low self-discharge Li-SOCl2 batteries 7.2V.

Special features:

Tamper detection;
Water and dust resistant for outdoor integrations;
Magnetic mount;
Convenient OTA (over-the-air) updating through user-friendly applications;
I/O event;
Sending acquired data via GPRS;
GPRS and SMS I/O events;
Configurable using Secured SMS Commands;
Accelerometer wake up;
Bluetooth® sensor support; *

Recovery mode; Periodic tracking on stop / on move;

Scheduler with time zones;
Backup tracking;
Static navigation;
Lost BLE sensor

Technical features


Part name	Physical specification
Status indication	1 LED
USB	USB socket
Measurements (fully assembled)	77.5 x 61.5 x 27.5 mm (L x W x H)


Technical details
Operating temperature (without battery)	-20 °C to +60 °C
Ingress Protection Rating	IP68

Dimension drawing:

Technical information about internal battery

Internal back-up battery	Battery voltage (V)	Nominal capacity (mAh)	Power (Wh)	Operating temperature range (°C)
Extremely low self-discharge Li-SOCl2 swappable, non-rechargeable battery, 7,2V 2200mAh	7.2	2200	15.84	-

Li-SOCl2 Batteries and passivation effects

1. Introduction to Li-SOCl2 Batteries

Lithium-Thionyl Chloride (Li-SOCl2) batteries are widely used in IoT applications due to their high energy density, long shelf life, and ability to operate in extreme temperatures. Their stable output voltage makes them ideal for long-term deployments in remote or low-maintenance devices like smart meters, industrial sensors, and tracking systems.

2. Understanding Passivation: Pros & Cons

One characteristic of Li-SOCl2 batteries is passivation, where a thin lithium chloride (LiCl) layer forms on the lithium anode.

Benefits of Passivation:

Reduces self-discharge, ensuring long-term energy retention.
Extends shelf life, making these batteries reliable for long storage periods.

Drawbacks of Passivation:

Can cause voltage delay when the battery is first used after storage.
High initial resistance may result in a temporary voltage drop, especially in high-drain applications.

3. Issues After Long Storage & Voltage Drop

If a Li-SOCl2 battery has been stored for an extended period, the passivation layer can become thicker, leading to:

Lower initial output voltage when first used.
A brief period where the device may not receive full power.

In IoT applications, this means sensors or communication modules might experience startup issues after long inactivity.

4. What to Do After Long Storage

For devices using these batteries, if a low voltage is detected after a long storage period, a simple solution is to send a record to the server. This brief activity will help break down the passivation layer, and the battery output voltage will automatically rise back to normal within approximately 24 hours.

This approach ensures reliable operation without manual intervention, making Li-SOCl₂ batteries a practical choice for IoT and long-life industrial applications.

	CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
	Battery should not be disposed of into general household waste. Bring damaged or worn-out batteries to your local recycling center or dispose them into a battery recycle bin commonly found in supermarkets.