Thông số kỹ thuật:

Power Source	35 V DC, under 30 mA (supplied from Central Unit)
Output	Headphone/Recording: 32 Ω (headphone)/10 kΩ, -20 dB* (recording), unbalanced, mini jack (with VR) Internal speaker: 130 Ω, 200 mW Contact output: 24 V DC, max. 50 mA
Control	Speech button: Microphone, speaker on-off control by speech switch Priority button: Microphone, speaker on-off, other microphone cutoff, and single-tone chime activation
Operating Temperature	0℃ to +40℃ (32゜F to 104゜F)
Operating Humidity	Under 90% RH (no condensation)
Finish	Case: ABS resin, black Panel: ABS resin, gray metallic, semi-gloss, paint
Dimensions	114.5 (W) × 78.4 (H) × 152.9 (D) mm (4.51" × 3.09" × 6.02")
Weight	780 g (1.72 lb)
Option	Microphone: TS-773 (standard), TS-774 (long) (select either one)