452 Telephone Test Set

The 452 telephone test set is designed for alarm technicians to test lines and verify signals sent to the Alarm Receiving Centre during commissioning and maintenance inspections. This low cost telephone test set has ‘TALK’ and ‘MONITOR’ modes to test lines without disrupting signals. The 452 telephone test set also includes DSP (Digital Service Protection) which enables safe operation where telephone wiring may carry digital signals, hazardous voltages or fault conditions. A “POL” test button with Green/Red LED’s indicate correct or reverse “A/B” polarity connection. The 452 is supplied with line cable with Red/Black Crock-Clips and BT connector.

Features:

• Rugged drop proof design with belt hook
• Safe with data lines
• Protected against 230VAC and lightning surges
• Built-in over current protection
• Active polarity and fault LED indication
• Battery saving auto power off/on
• Three position volume boost control
• Easy tone/pulse selection
• Finger tip microphone mute
• 32 digit last number redial


SPECIFICATIONS:
Long line Operation: With a 48V feed >5K loop, minimum current <10mA.
DC Resistance: Off-hook
TALK mode: <300.
On-hook Idle:>5M (10uA @ 48VDC).
Monitor:>5M (20uA @ 100VDC).
Monitor Impedance: >100K @ 1KHz.
Dialling:Pulse Dial: 100pps, break 60%.
DTMF/Tone dial level: -3dBm typical.
Flash/Timed Break Recall:100mS (switchable 600mS, 300mS).
Memory Dialling: 32 digit Last Number Redial.
PBX Pause: 2 seconds (can be chained and stored in memory).
Alkaline Battery LED:1 year normal use. Low battery indication, 2 hours
remaining continuous use.
Automatic Power Shut Off:5 minutes after disconnection.
Environmental:Operating temp: -5C to +40C. Weatherproof to IP30.

	Product 1+    3+    Qty  ACT 452 Telephone Test Set £67.15  £60.35