This product range is no longer produced.

All downloads, such as the manual can be found here under “Downloads”.

We continue to offer the service for easyRESCUE devices.


Timing chart of DSC operation


Software for Android and Apple
Programming-software for Android:


For Apple:




This product is replaced by A040 easyRESCUE-PRO (BT) >

Get the best of both to alert vessels about situation of distress

If a „MAN OVER BOARD“ situation happens, you need to keep the victim in sight. It is essential for his survival.

The easyRESCUE-PRO has been developed based on the well-known and approved AIS S.A.R.T. device easyRESCUE. In addition to the AIS locating functionality, the easyRESCUE-PRO has got another built-in VHF alert: DSC distress call (MOB)

By means of DSC distress call, other vessels having DSC controllers aboard are able to provide support as a potential emergency responder. It‘s a lightweight personal locating device which is fixed to clothing or lifejackets and which can be mounted onto a pole for use on life rafts.


Upon activation, the easyRESCUE-PRO device starts transmitting position reports via AIS, providing the current GPS position along with COG, SOG and its individual unit ID.
The victim‘s position is updated every minute and transmitted 8 times per minute for at least 96 hours, depending on the DSC closed loop distress acknowledgment. Therefore the crew of the ship will know exactly the victim‘s position, as well as every other ship with an AIS receiver or DSC controller within range.

When in emergency, AIS messages are transmitted. It triggers a safety related message on every AIS chart plotter with a worldwide standardized symbol.

By means of DSC distress call (MOB), this signal can be received by the GMDSS (Global Maritime Distress and Safety Service), which is installed on numerous vessels and shore stations. The MRCC (Maritime Rescue Coordination Center) is part of the GMDSS (DSC) network.

The easyRESCUE-PRO starts sending “closed loop” DSC distress alerts when activated. This “closed loop” message is addressed to the own ship of the victim. Up to this time no global alarm is initiated.  The crew on the own ship can decide to rescue the victim on this own and send out a DSC acknowledgment to the easyRESCUE-PRO, which stops sending DSC messages. In addition, the easyRESCUE-PRO offers the possibility of programming up to eight mother ships ID numbers (MMSI) into the device to those users, who often need to change a vessel like pilots, SAR crew members, etc.

Any vessel within the “closed loop” group (up to eight vessels) can acknowledge these distress telegrams, which lead to a termination of the DSC distress calls send out by easyRESCUE-PRO. If the “closed loop” distress telegrams are not acknowledged, the easyRESCUE-PRO starts sending „open loop DSC distress calls“ (MOB) to all ships. Now the shore station or other commercial ship stations nearby can acknowledge this message and the easyRESCUE-PRO will also cease transmitting DSC. The global rescue operation will go on.

What is necessary to run the easyRESCUE-PRO?

The easyRESCUE-PRO needs no additional accessory. The device is ready to use, grab‘n‘go! An AIS receiver and a DSC controller are strongly recommended as a radio equipment on the own ship. Only then a fast and effective rescue operation can be conducted by the own crew.

AIS transmitter part

  • Floatable
  • Single-hand or automatic activation
  • Certifications:
    • CE
    • R&TTE
  • 96h in AIS mode after DSC “closed loop” alert has been acknowledged
  • 24h in AIS and DSC joint operation, when DSC gets no acknowledgment
  • Individual unit ID is transmitted
  • Clear function indication by 4 LEDs
  • High radio range of 10nm and more (depending on height of reception antenna)
  • GPS position is updated every minute
  • Parent ship knows where the victim is
  • No annual charge or subscription
  • No waiting for satellites
  • Type of Activation available:
    • manually
    • water contact trigger when submerged
    • rip cord trigger with magnetic switch

DSC radio transmitter and receiver part

  • includes a DSC transmitter and receiver
  • Closed loop DSC distress can address up to eight programmable vessel IDs
  • Open loop DSC distress alert can be relayed by other DSC stations
  • Conform to RTCM 11901.1 and EN301025 (DSC Class D)
  • Additional to the homing functionality of the AIS,  the DSC now provides GMDSS alerting


Article number A040-PRO
Certification CE / R&TTE
Case Measurements (L) 130mm * (B) 70mm * (H) 30mm
Total Weight Approx. 250 grams
Battery Industrial pack Lithium Cells 9V/3V
Frequencies AIS 1: 161.975 MHz |   AIS 2: 162.025 MHz
Transmission Power Minimum of 2 Watt radiated (Average >2.8W)
GPS Receiver 56 Channel Receiver with integrated Antenna, approved according to IEC 61108-1
VHF Antenna Flexible steel ribbon antenna, foldable
Operation Time (activated)
  • Minimum of 96 hours over the full temperature range,
  • AIS transmissions only, DSC acknowledged and shut down
Battery Replacement Cycle Every 5 years
temperature range
-20°C to +55°C
Storage temperature range -30°C to +70°C
  • 3 LEDs for function
  • 1 bright Flash LED for optical indication
Control Elements
  • 2 Buttons
  • 1 Magnetic Trigger Switch
Supported AIS messages Msg.1:
AIS position report (dynamic data)

  • 6/8 times per minute
  • Unit MMSI: 9 digit Identification Number
    (unique worldwide)
  • Position
  • Speed above Ground (SOG)
  • Course above Ground (COG)
  • Navigational status Alarm: 14; Test: 15

AIS Safety related message

  • 2 times every 4 minutes
  • MMSI
Complied standards
  • IEC 61097-14, IEC 60945, ITU-RM.1371-3,
  • IMO Res. MSC.246(83), IEC 61108-1

DSC (specific data)

Article number A040-PRO
DSC operation modes “closed loop” and “open loop” pursuant to RTCM 11901.1
Frequency DSC Frequency: 156,525 MHz, Channel 70
Transmission power Minimum 1 Watt (Average >2W)
Operating time (activated) In joint operation with AIS emergency messaging: 24 hours
Battery Replacement Cycle 5 years, pursuant to SOLAS requirements
Complied standards RTCM 11901.1, EN301025, Class D
  • 2 of the most important maritime radio communication systems united in one single unit
  • AIS localization
  • DSC distress call (MOB) functionality
Select Language
Back to top