Toa HF-670M, HS-670 Specifications

TOA INTERCOM SYSTEMS

SURFACE-MOUNTED MASTER

STATION AND HANDSET UNIT

HF-670M/HS-670

DESCRIPTION

The TOA HF-670M heavy-duty industrial-use master
station is designed to operate with maximum reliability in
extreme environments, such as high-noise or dust-filled
areas where an ordinary intercom station cannot be used.

It provides hands-free intercom communications, as well

as handset operation when used with the HS-670 handset

unit. The HF-670M station can communicate with all other
master stations in the system. The HF-670M is equipped
with 13 dialing keys, an in-use lamp for eavesdropping
protection, and pre-adjustable microphone sensitivity and
output level volume controls. When it is used with a

separate (PAM-05) booster amplifier and (DS-100) DC

power supply unit, the HF-670M can perform high-level

paging.

*The HF-670M does not have a built-in speaker. A separate speaker such as the
TC-101 A is required.

FEATURES

1. Rugged, heavy-duty master station designed for
industrial use.

2. Splashproof construction.

3. HS-670 handset unit enables private conversations.

4. Powerful paging capability for high noise level areas
when used with external loudspeaker, plus optional
PAM-05 booster amplifier and DS-100
supply unit.

5. Large, easily visible in-use lamp.

6. Large keys for operational ease.

7. Surface-mounted type.

8. Pre-fixed volume controls to adjust microphone
sensitivity and speaker sound level.

DC power

SPECIFICATIONS APPEARANCE AND DIMENSIONAL DIAGRAM

Microphone Impedance &

Sensitivity
Speaker Impedance
Line Impedance
Audio Frequency Range
Calling Tone Signal

Output Level
Current Consumption
Operating Temperature
Dimensions (W x H x D)

Weight

1k-ohm/-68dB omnidirectional electret

condenser microphone
8 ohms (External speaker is required)
600 ohms balanced
500Hz to 3.5kHz
Depends on external speaker provided

18mA (LED), 83mA (Lamp)
0°C to 6O°C (32°F to 140°F)

185 x 382 x 89mm

7.3 x 15.0 x 3.5 inches

3.4kg (7.5 Ibs. )

ARCHITECT’S AND ENGINEER’S SPECIFICATIONS

The master station shall be a splashproof surface-mounted TOA
HF-670M and shall be capable of reliable hands-free operation in
extremely noisy or dusty areas. Private conversations shall be made
possible by use of the HS-670 handset unit. The master station shall be
able to communicate with all master stations in the system.
The HF-670M shall be equipped with 13 operating keys, eavesdropping

protection with an in-use lamp, and pre-adjustable microphone level
sensitivity and output level volume controls. A separate speaker such as
the TOA TC-101A shall be required. High level paging shall be made
possible in conjunction with the TOA PAM-05 booster amplifier unit and
the DS-100 DC power supply unit.

OPTIONAL ACCESSORIES

TC-101A

Paging Horn Speaker for HF-670M

SPECIFICATIONS

Input 10 watts
Impedance 8 ohms

S.P.L. (at 1kHz) 120dB/10W/m
Frequency Response 315Hz to 12.5kHz
Dispersion 188° horizontal, 190° vertical
Sensitivity as Microphone -24dBm

(0dB—1mW/10 dynes/cm)
Weight
Finish

Dimensions

*The TC-151A (15W) and TC-301A (30W) paging horn speakers are also available for the use
with the TC-101A.

0.8kg (1.8 Ibs.)
Horn Flare: Aluminum, gray

Inner Horn & Rear Cover: ABS resin, dark gray
Bracket and Bolts: Stainless steel

Horn Flare (W x H): 172 x 126mm
Length: 148mm (5.8 inches)

(6.8 x 5.0 inches)

PAM-05
5W Booster Amplifier for HF-670M

The PAM-05 is a 5W booster amplifier for
HF-670M industrial-use hands-free master station.

SPECIFICATIONS

Power Source
Current Consumption

output 5 watts (8 ohms load)

Frequency Response
Input Reception
Input Impedance

Speaker Impedance

Distortion Less than 3%

DS-100
DC Power Supply Unit for HF-670M

the external PA speaker on the

DC + 24V to be supplied externally

0.1A or less at no signal

0.5A or less at rated output

Within 30Hz–10kHz, ±3dB

2.8V (Highest vol.)
2k ohms, balanced
4 to 8 ohms

HS-670

Handset Unit for HF-670M

SPECIFICATIONS

Microphone Impedance
Speaker Impedance
Output Level
Power Consumption
Material

Weight

500 ohms
200 ohms

-72dB

3.3mA
ABS resin
550g (1.21 Ibs.)

The DS-100 DC power supply unit is required on the HF-670M industrial­use hands-free master station when turning on the display lamp or using
the PAM-05 5W booster amplifier unit.

SPECIFICATIONS

Power Source
Voltage Output
Current Output
Input Capacity
Finish
Weight

TOA Corporation

AC mains, 50/60Hz
DC 22V

0.5A
Standard: 17VA, Max.: 20VA or less
Case: Leather steel plate (Black)

1.3kg (2.9 Ibs.)

*Specifications are subject to change without notice

Printed in Japan 833-63-026-10