Power Source
Supplied from an external 24 V DC/400 mA power supply or from an optional AD-246 AC adapter
Power Consumption
10 W (rated output)
Wave Format
44.1 kHz sampling frequency, 16-bit PCM (monaural)
Frequency Response
20 Hz – 20 kHz ±3 dB (1 kHz)
50 Hz – 14 kHz ±3 dB (IT-450 mounted, 1 kHz)
Distortion
1 % or less (1 kHz, rated output)
Recording System
USB data transfer or analog recording
Control Input
Play 1-4, stop: No-voltage make contact input, pulse make length: 200 ms,
open voltage: 30 V DC, short-circuit current: 10 mA
removable terminal block (22 pins)
Control Output
Busy: Contact capacity: 30 V DC/0.5 A, removable terminal block (22 pins)
Input
Input/Recording input: Mic: -60 dB(*1), 2.2 kΩ/ Line: -20 dB(*1), 10 kΩ, (Mic/Line changeable), unbalanced, phone jack
Line input: 0 dB(*1), 10 kΩ, unbalanced, removable terminal block (22 pins)
Output
Line output: 0 dB(*1), 600 Ω, unbalanced, removable terminal block (22 pins)
Headphone output: 0 dB(*1), 100 Ω, unbalanced, phone jack
Speaker output: 3 W, 8 Ω, removable terminal block (22 pins)
LED Indicator
POWER, USB, START/STOP 1-4
Maximum No. of Messages
4
Pre-recorded audio data: Message 1, Westminster chime(*2)
Message 2, Ascending 4-tone chime(*2)
Message 3, Descending 4-tone chime(*2)
Message 4, None
Note: The above audio sources can be overwritten by using the supplied software.
Maximum Recording Time
6 min
Message Delay Time
0, 2 s or 4 s (selectable)
Playback Interval Time
∞, 0, 5 s, 10 s, 30 s, 1 min, 5 min, 10 min, 30 min or 1 h (selectable)
Operating Temperature
0 ℃ to +40 ℃
Operating Humidity
90 %RH or less (no condensation)
Finish
Case: ABS resin, black
Dimensions
210 (W) × 44.2 (H) × 181 (D) mm (excluding projection)
Weight
730 g
Accessory
CD-ROM (USB data transfer software and sample chimes recorded)…1, Unbalanced-phone plug…1, USB cable (1 m)…1, Removable terminal plug (22 pins)…1, Rubber foot…4
Option
Rack mounting bracket: MB-WT3 (for rack mounting one EV-20R unit)
MB-WT4 (for rack mounting two EV-20R units)
AC adapter: AD-246
USB Data Transfer Software Operation Environment
Personal Computer
Windows PC (equipped with the USB terminal)
Main Specifications
CPU: Pentium 4, 2 GHz or greater
Memory: 2 GB or more
Free disk space: 10 MB or more (space for message storage excluded)
Optical Drive: CD-ROM drive
OS
Windows 7 Professional (32/64-bit)
Windows 8.1 Pro (64-bit)
Windows 10 Pro (64-bit)
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