USED J&J T-68 Temperature Biofeedback
J&J T-68 Stand Alone Temperature and GSR unit with Digital Display. This is a 2 channel device. Comes with one thermistor. Uses four C Cell batteries.
This unit is capable of doing both GSR and temperature. For GSR the T-68 requires the IG-3. This unit would make a great back up in the event you already own a T68 as this device is no longer being produced.