M Series* - MAP Acoustic Fish Transmitters
- Overview
- Features
- Applications
- Specifications
- Product Sheet
MAP Acoustic Transmitters for Fish
Available as ID-only (this page) or ID plus sensors
M-Series acoustic tags are designed for operation with Lotek’s unique MAP digital encoded telemetry systems. These systems allow over 80,000 unique ID’s on a single acoustic frequency, while retaining the ability to identify individual animals.
Both ID-only and ID plus sensors (temperature, pressure/depth or motion) can be simultaneously monitored and recorded.
This page contains specifications for the non-sensor models of the M Series acoustic tags.
Specifications for the sensor models of the M Series can be found here.
*(replaces MA-Series)
- Over 80,000 unique ID’s.
- Allows simultaneous detection/decoding hundreds of co-located transmitters.
- Rapid (1/sec) transmission rates.
- On/off activation by magnet removal.
- Sensor option available (temperature, pressure, motion).
- ID-only and ID plus sensor transmitters can be detected/recorded simultaneously.
Examples of real-time and/or datalogging applications for which M-Series coded transmitters are ideally suited include:
- Species interaction
- Migration / passage studies
- Fine scale 2D and 3D habitat utilization
- Environmental assessment
- Aquaculture research including in-cage monitoring
- Behavior relative to hydro dam operations
| Physical Specifications | Calc Life | |||
| MODEL | Sensor Type | Size (d x length) | Weight | 5 sec trans interval |
| (mm) | (g) | (days)** | ||
| MM-M-8-SO | ID-only | 8.5 x 42 | 5.5 | 21 |
| MM-M-11-SO | ID-only | 11 x 42 | 6.6 | 21 |
| MM-M-11-28 | ID-only | 12 x 60 | 11 | 104 |
| MM-M-11-45 | ID-only | 12 x 73 | 15 | 162 |
| MM-M-16-25 | ID-only | 16 x 57 | 26 | 198 |
| MM-M-16-33 | ID-only | 16 x 64 | 29 | 271 |
| MM-M-16-50 | ID-only | 16 x 80 | 35 | 433 |
Specifications for the sensor models of the M Series can be found here.
Notes on specifications
- Acoustic frequency 76 or 200 KHz.
- All dimensions are for internal implantation.
- External attachment option available, which slightly increases transmitter length and weight.
- Size/weight specification tolerance typically +/- 2% but periodic design modifications to individual models may result in greater deviation from specified above. It is recommended that specifications be confirmed when placing an order.
- Warranty life is defined as 80% of the calculated life. Calculations are based on the battery manufacturer’s specifications and tests performed at our factory.
- Calculated life listed for 76 KHz operation - add 25% for 200 KHz.
- All tags are guaranteed to meet stated specifications upon shipment. Any Lotek tags found to be defective, with respect to material or work manship, will be repaired or replaced.
M Series acoustic tags (PDF)![]()

