|The TOA PM660 is a desktop paging microphone terminated in a 6.3mm (1/4") jack plug.
It is designed for general purpose all call announcements and comes with a large press to talk button and a locking switch for longer announcements. It can be used on any public address amplifier that has a suitable 6.3mm jack microphone input.
Here's the technical info:
||Moving coil microphone
||600 Ω, unbalanced
||-58 dB (1 kHz, 0 dB=1 V/Pa)
||100 Hz - 10 kHz
||2-conductor shielded cable (2.5 m (8.2 ft)) with phone plug
||1-push-to-talk switch, 1-locking lever, Short-off type
||-10 ℃ to +50 ℃ (14 ゜F to 122 ゜F)
||95% RH or less (no condensation)
||Microphone head : Zinc plated steel wire, gray baked paint
Main unit: ABS resin, gray
||100 (W) × 215 (H) × 150 (D) mm (3.94" × 8.46" × 5.91")
||440 g (0.97 lb) (cord excluded)