Telephone Test Set - Alarm Maintenance and Testing

452 Telephone Test Set

The ACT 452 Telephone Test Set is designed to operate safely in situations where telephone wiring may be carrying digital traffic, voltage feed to remote electronics or the hazardous voltages that result from fault conditions or misuse of the cable. This is an essential tool for checking potential faults on telephone lines where an alarm communicator is fitted.

• Safe to use on analogue and digital lines
• ‘TALK’ and ‘MONITOR’ modes enable lines to be tested without disrupting signals
• Digital Service Protection (DSP) enables safe operation where telephone wiring may carry digital signals, hazardous voltages or fault connections
• ‘POL’ test button with green/red LEDs indicate correct or reverse A/B polarity connection
• Built-in over current protection against 230VAC and lightning surges
• Active polarity and fault LED indication
• Battery saving auto power on/off
• 3 position volume boost control with easy tone/pulse selection and finger tip microphone mute
• Rugged, drop proof design with belt hook
• Supplied with operating instructions and line cable with red/black crock-clip connectors

LONG LINE OPERATION: With a 48V feed > 5k Ω loop, minimum current < 10mA
DC RESISTANCE: Off-hook TALK mode: < 300 Ω, On-hook idle: > 5M Ω (10uA @ 48VDC) Monitor: > 5M Ω (20uA @ 100VDC)
MONITOR IMPEDANCE: 100k Ω @ 1kHz
DIAL:
Pulse Dial: 100pps break 60%
DTMF/Tone dial level: -3dm typical
Flash/Timed Break Recall 100mS
(switchable 600mS, 300mS)
MEMORY DIAL: 32 digit last number redial, PBX Pause: 2 seconds
ALKALINE BATTERY LED: One year normal use
Low battery indication, 2 hours remaining
continuous use
AUTOMATIC POWER SHUT OFF: Five minutes after disconnection

Web Exclusive - Free Product

Customers who purchase our 452 Telephone Test Set will automatically receive our new 455 Hands Free Headset - worth £9.50 - in with their order, free of charge. This special offer is only available from this website.

IMPORTANT: We’ll sort out your free headset(s) at our end so there’s no need to add them to your basket.