Panasonic KX-TDA50 Installation Manual page 24

1.4 Specifications
Extension Connection Cable
Dimension
Weight (when fully mounted)
24 Installation Manual
SLT
DPT
APT
PT-interface CS
DSS Console and Add-on Key Module 1-pair wire (D1, D2)
275 mm (W) × 376 mm (H) × 117 mm (D)
(10-4/5 in × 14-4/5 in × 4-3/5 in)
Under 3.5 kg (7.72 lb)
1-pair wire (T, R)
1-pair wire (D1, D2) or
2-pair wire (T, R, D1, D2)
2-pair wire (T, R, D1, D2)
1-pair wire (D1, D2)