The Potter Electric Signal VSA-1 is a self-contained vault sound alarm controller and microphone in a single housing. It is UL Listed for primary protection of bank and mercantile vaults.
First, the microprocessor balances the microphone circuit against the controller’s internal impedance. Then any change in impedance — for example, a vault wall being attacked — triggers the SPDT alarm relay. As a result, the VSA-1 detects both rising and falling impedance, covering a wide range of attack methods.
Potter Electric Signal VSA-1 Key Features
- Self-contained controller and microphone combined in one enclosure
- Microprocessor-driven DC differential balance circuit
- SPDT alarm relay triggers on microphone-circuit impedance change
- Single-button system balancing simplifies commissioning
- On-board accumulator with 0-9 pulse threshold over a 10-minute window
- Manual sensitivity adjustment per UL 639 and UL 681 attack profiles
- Form C and Form B tamper relays for enclosure supervision
Specifications
- Dimensions: Ø 5.12″ × 3.43″
- Weight: 1.1 lb
- Ambient temperature: 32°F to 120°F (0°C to 49°C)
- Humidity: up to 85% relative humidity
- Electrical connections: two 1/2″ conduit openings
- Alarm relay: 1 SPDT (Form C), 2.0 A @ 30 VDC
- Tamper relays: 1 Form C and 1 Form B, 2.0 A @ 30 VDC each
- Listings: UL 639 and UL 681 (vault sound alarm)
Where the VSA-1 Is Used
Specifically, the VSA-1 is intended for reverberant and non-reverberant vaults. For example, bank vaults, jeweler vaults, and high-value mercantile vaults all qualify. Therefore, the device belongs in burglary and safe protection systems, not in fire alarm voice evacuation systems.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 1.5 lbs |
|---|---|
| Dimensions | 6 × 6 × 5 in |
| Condition | New |
| Manufacturers | Potter |
| Part Type | Replacement Part |
