Tascam RC-3F - 3 Pedal footswitch for supported Tascam devices

The RC-3F is a 3-pedal footswitch for the GB-10, LR-10, DP-03 and other Tascam recorders and players. 
The mini jack plugs into the "remote" connector of these products allowing hands-free operation of features like play/pause, looping or punch. 
For more information, see the user manual of the product in question.

Main Features
-Three-pedals footswitch (left, center, right) for hands-free operation of certain Tascam products
-Perfect to control transport and trainer functions of GB-10 and LR-10 trainers
-Function can be set by the controlled unit
-Battery charge indicator on bottom side
-2.5-mm TRS plug with 3.9 m cable
-Output format: UART signal (9600 bps baud rate, even parity)
-Power supply by two AA batteries (manganese, alkaline or NiMH rechargeables)
-Power consumption: 3 mW
-Dimension (W x H x D): 190 mm x 32 mm x 122 mm
-Weight: 0.55 kg