Components / Receivers / TBR 800 Release Deep

TBR 800 Release Deep

The TBR 800 Release Deep features a motorized release three times stronger than the standard version, ensuring reliable operation under high pressure. The release is triggered acoustically from the DeckBox.

Key Advantages

Advanced digital signal processing

Dynamic signal thresholding and SNR-based detection filtering provide longer range, reduced code collisions, and cleaner data in noisy environments.

Extended battery life and large memory

Operates up to 24 months on a single battery set and stores over 3 million detections, making it ideal for long-term deployments.

Wireless data access and firmware updates

Download detection logs and update firmware via Bluetooth using the intuitive ComPort software — no cables needed.

Modular and robust construction

Built with precision-machined Delrin® housing, TBR 800 is fully modular — easily converted to a release unit without the need for new hardware.

Up to 3 frequencies simultaneously

Use multiple frequencies at the same time to double or triple the amount of transmitters in the same area without sacrificing data throughput

Open Protocol Compatibility

Work seamlessly across manufacturers. Share data, collaborate globally, and access broader tracking networks.

Synchronization Transmit

Utilize the built-in synchronization transmit (sync tag) and customize it by selecting transmit interval, power, and frequency in ComPort.

Easy to use everywhere

The TBR 800 is designed with ease of use and efficiency in mind, and it can be deployed in lakes, rivers, fjords, or the ocean down to several hundred meters in depth.

Extensive receiever logging

Receiver continuously logs temperature data, noise conditions, inclination, power consumption, and battery status

Choose your configuration

The TBR 800 is the most advanced digital acoustic receiver on the market, providing reliable data collection in all conditions. It operates in the frequency range 63 - 77 kHz with multi-frequency reception, allowing up to 3 frequencies simultaneously. It features internal data logging of environmental and battery status, ensuring efficient and accurate tracking. The standard model is modular and comes in 3 options

Standard

The standard TBR 800 is built for simplicity and versatility. It can be deployed in very shallow water, attached to a rope with a buoy, fixed to an underwater structure, or used in many other configurations. With up to 24 months of battery life, the battery can be replaced without detaching the unit from its mooring line.

Release

The TBR 800 Release replaces the modular bottom with a motor-driven acoustic release bottom. The release module has a lug that weights can be attached to. The lug is pushed out when release is triggered, and buoyancy elements can then lift it to the surface. Combine with the Mooring Recovery system to recover all deployed receiver components

Release deep

The TBR 800 Release Deep features a motor-driven acoustic release function that is three times stronger than the standard Release model, providing extra force to operate reliably under high water pressure. We recommend this option if deploying to depths greater than 200 meters.

Robust Digital Acoustic Receiver for Demanding Marine Environments

The TBR 800 is an energy-efficient acoustic receiver operating at 63-77 kHz, designed for harsh environments like lakes and deep seas. It features a rugged Delrin© housing, enhanced signal processing for better range and fewer code collisions, and wireless data transfer via Bluetooth. Battery life lasts up to 24 months, with easy battery replacement without removing the unit.

Specifications

Specification	Value	Remark
Length	450 mm
Diameter	80 mm
Weight in air	2720 g	2920 g with battery
Weight in water	700 g	900 g with battery
Battery type	SL 2790	High-capacity battery optimized for long-term underwater use
Battery life	24 months	~21 months for 2 frequencies, and around ~18 months for 3 frequencies
Operational depth	200 - 750 m	Can be used less deep, but consider TBR 800 Release and standard
Maximum depth	750 m
Onboard data recording	Multiple parameters	Temperature, average noise, peak noise, inclination, current draw, motor current draw, and motor voltage
Available frequencies	63-77 kHz
Multi-frequency	3 frequencies	Can monitor up to three frequencies simultaneously for flexible tracking
Memory	32 MB
Number of detections	3 million

Testing the Acoustic Release – TBR 800 in Water

Watch the first in-water test of the acoustic release for the TBR 800 Release. See how the release mechanism performs under real conditions, showcasing reliability and strength for underwater operations.

Aquaculture

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Related Components

Products featuring comparable functionality and design, engineered for seamless integration and flexible use within the TBR 800 product line.

TBR 800

The TBR 800 is a robust, low-power digital acoustic receiver operating at 63–77 kHz. Used with Thelma Biotel transmitters, it supports customizable code sets. Paired with the DeckBox, it can send status updates on battery and power use.

TBR 800 Release

TBR 800 Release is a robust, low-power digital acoustic receiver operating at 63–77 kHz. Used with Thelma Biotel transmitters, it supports customizable code sets. It features an acoustic release module that can be triggered when paired with the DeckBox

Frequently used together

Explore products designed to perfectly complement the TBR 800, helping you maximize efficiency and reliability in your operations.

Configurable 6 - 16 mm Transmitters

Thelma Biotel transmitters are energy-efficient and versatile, designed for studies of aquatic species and underwater equipment. They come in five sizes: 6, 7, 9, 13, and 16 (based on diameter in mm). They can be tailored in length, power output, and battery life to fit your needs. They are used in wildlife tracking, aquaculture monitoring, and equipment monitoring. Whether you need an off-the-shelf solution or a tailor-made design, our transmitters can be configured for your exact requirements.

DeckBox Field Kit

The DeckBox is a versatile topside kit for manual logging of acoustic transmitters, retrieving TBR 800 Release units, and performing status checks on deployed equipment. With its rugged, waterproof tablet and our free LiveView software, you get flexible, real-time control and monitoring right in the field.

Focus - Directional Amplifier Field Kit

The Thelma Biotel Focus – Directional Amplifier Field Kit is a precision-engineered acoustic reflector that fits seamlessly over the standard Live transceiver. It delivers powerful signal amplification within ±15° of your target. Designed for use with the DeckBox, the Focus extends your operational range and pinpoints the bearing of any acoustic transmitter. It is essential for maintaining a safe communication distance when working with the TBR 800 Release – Deep model, and we recommend it for all Release receivers operating at depths greater than 200 m.

ComPort

Upload, view and analyse your tracking data quickly and easily with Thelma Biotel’s software, ComPort. By using the built in Bluetooth connection on the TBR 800, uploading substantial amounts of data is seamless and fast. With ComPort’s many viewing options, visualizing and understanding your tracking data is easier than ever.