After the success of the TRS-80 Pocket Computer (a.k.a. TRS-80 PC-1), Sharp also manufactured their PC-1500 (see there for more technical information) in a version for Tandy Radio Shack.
This machine was marketed as the TRS-80 PC-2 (catalog number 26-3601). Internally, it was exactly the same machine. Only the front face design had been changed: the keyboard layout was different, with an additional enter key, and the display had been shifted to the right. Moreover, the colour style was also slightly different, with a light gray instead of brown back of the case.
Some peripherals supplied by Tandy were the "docking station" with 4 colour pen plotter and cassette interface (catalog number 26-3605), 4 and 8 KB RAM module (26-3615 and 26-3616), an external tape interface (26-3605) and an RS-232 interface (26-3612). Of course, all peripherals developed for the Sharp PC-1500 could also be used.
Thanks to Roman von Wartburg and his site for information and picture.
TRS 80 PC-2
Tandy Radio Shack
BUILT IN LANGUAGE
66 keys, QWERTY calculator type with numeric key-pad
LH 5801 8-bit CMOS
3.5 KB expandable up to 19.5 KB with a 16 KB RAM module
1 line x 26 chars. (LCD screen)
7 x 156 pixels
One-channel Beeper, with frequency and duration controllable by BASIC statement
SIZE / WEIGHT
19.5 (W) x 8.6 (D) x 2.55 (H) cm / 375 g (with batteries)
Proprietary 60 pin expansion bus, 40-pin slot for memory and program modules
BUILT IN MEDIA
4 x AA 1.5V batteries, 50 hours run time (0.13W) - 6V DC external AC adaptor EA-150