The Latch-Test™ is a tone generator specifically designed for testing switched loops, thereby meeting tone generator and continuity test needs for the security and alarm industry. Its combined tone generator and continuity test functions create a constant output tone generator that is seamlessly integrated with a sixmode continuity tester. It delivers an accurate, easy-to-read status of a circuit’s continuity in real time and can perform a latch of the occurrence of a selected event. The continuity indication can be both visual and audible (or visual only). Battery life is maximized by low-power circuitry, regulated outputs, auto-off, and battery low indicator.

Key Features

• Tone generator with two tone amplitude levels (normal and half)
• Half amplitude that is unbalanced for stronger signal on twisted pairs
• Three distinctly different tones easily selected from front panel
• Audible and visual indication of continuity results with the option to turn off audible
• Constant amplitude signal over life of battery for constant signal strength
• Auto-off after three hours in tone mode

Applications

• Tests sensors, switches, and circuits used in security/alarm systems
• Checks continuity of a circuit using one of six modes
• Checks status of a phone circuit
• Sends tone for tracing