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Locator-U1

Buy Locator-U1 here!

Description

The Locator-U1 is a battery-powered, digital hydroacoustic locator device. It includes an internal GPS-based time-sync module, eliminating the need for a tether. This makes it ideal for divers, ROVs lacking convenient power sources, or other underwater applications.

Before deployment, the Locator-U1 must obtain a GPS lock. The integrated status LED indicates the lock status. Once locked, the Locator-U1 can operate for around 6 hours before it needs to resync with GPS.

A rotary switch is located inside the cap, allowing you to select the channel on which the Locator transmits. The same channel must be set in the Water Linked Underwater GPS GUI. Each side of the Locator has three M3 mounting holes, and a standard bracket is included.

Charging

The Locator-U1 has an internal rechargeable battery. Use the included USB-C cable and a 5 V / 2 A (or higher) wall adapter to charge it.

1) Insert the USB-C cable
Plug one end of the cable into the Locator-U1’s charging port.

2) Connect to a suitable power source
Attach the other end of the cable to a wall adapter providing at least 2 A.
Avoid charging from a computer USB port.

3) Charge for 7 hours
Leave the Locator-U1 connected for a full 7 hours to ensure a complete charge. You can then disconnect the cable and use the Locator-U1.

LED Behavior While Charging

When the Locator-U1 is connected to a charger, the LED does not indicate charging progress. You may see:

1) Blinking green LED
The Locator-U1 is powered on and functioning normally (such as searching for GPS). This does not reflect charging status.

2) No LED (off)
The battery is too low to power on, but the device is still charging. Once it has enough power, the LED will start blinking.

3) Solid green LED
The Locator-U1 is powered on and has a GPS lock (see LED Signals). This does not mean it is fully charged. Keep charging for the full 7-hour period.

Warning

Do not charge the Locator-U1 using a computer USB port.

Powering On and Off

  • To power on the Locator-U1, securely tighten the lid over the charging port. The LED will begin blinking to indicate that it is searching for a GPS lock. Once the LED stops blinking and becomes solid, the Locator-U1 has acquired a GPS lock and is ready for use.
    Ensure the O-ring on the lid is undamaged before submerging the device.

  • To power off the Locator-U1, unscrew the back lid until the LED turns off.

LED Signals

  • No green light
    Power is off; the Locator-U1 is not ready for diving.

  • Flashing green light (once per second)
    The Locator-U1 is searching for a GPS lock and is not ready to dive.

  • Fixed green light
    The Locator-U1 has a GPS lock and is ready to dive.

  • Flashing green light (slow)
    The Locator-U1 previously had a GPS lock but lost it. It is still ready to dive.

  • Fast flashing green light (multiple times per second)
    Error indication. The Locator-U1 is not ready to dive. This often happens if the device has exceeded its dive time and the pressure sensor requires drying. Charging the Locator helps to dry the sensor more quickly.

Warning

The Locator-U1 can only be submerged for about 6 hours. It then requires time to dry the pressure sensor in order to provide accurate depth readings.

Wiring Interface

Since the Locator-U1 is battery powered, its only interface is the charging port, which is a standard USB-C connector.

Included in Package

  • Locator-U1
  • USB-C charging cable
  • Mounting bracket

Dimensions

u1_dimensions

Datasheet

Datasheet