| Designation |
| TKBA 21 |
| Transmitter/receiver units | Type of laser | Red laser diode |
| Laser | 1x Built-in class 2 laser, <1mW, 635nm |
| Laser line length | 2.4 m at 2 m (7.9 ft at 6.6 ft) |
| Measurement accuracy angular | Better than 0.02° at 2 m (6.6 ft) |
| Measurement accuracy offset | Better than 0.5 mm (1/50" in.) |
| Measurement distance | 50 mm to 3 m (2 in to 10 ft) |
| Control | Laser ON/OFF |
| Housing material | ABS + 2K and Aluminium base powder coat finish |
| Fixtures | Mounting | Magnetic, side mounted |
| Battery | 3 x AAA Alkaline type IEC LR03 |
| Operation time | 32h (continuous operation) |
| Operating requirements | Operating temperature | 0 to 40 °C (32 to 104 °F) |
| Storage temperature | - 20 to 60 °C (-4 to 140 °F) |
| Relative humidity | 10 to 90% RH non-condensing |
| IP rating | IP 40 |
| Dimensions | Transmitter/receiver units | 98 x 97 x 52 mm(3.86 x 3.82 x 2.05 in.) |
| Carrying case dimensions | 360 x 110 x 260 mm (14.2 x 4.3 x 10.2 in.) |
| Weight | Transmitter/receiver units | 250 g (0.55 lb) with batteries |
| Total (incl. case) | 1.62 kg (3.57 lb) |
| Case contents | 2 x TKBA 21 transmitter/receiver unit |
|
| 6 x AAA batteries |
|
| 1 x Printed Instructions for use |
