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ASK-4® #304

LE-292
Summary

The ASK-4® #304 is a four zones audio monitoring system designed ideally for connection to IP cameras or NVRs. Verifact® A microphones can pick up sounds within a 30′ diameter circle. The model IF-4 interface adapter connects to the microphones, supplies power to the microphones and drives audio into the input of the recording device. The four Verifact® A microphones are designed for ceiling mount applications.

IF-4:

  • Line level audio output (RCA) to NVR, IP Camera, etc.
  • Adjustable gain potentiometer
  • Low-profile for ease of installation

Verifact® A:

  • Omni-directional, within 30′ diameter circle
  • Durable, high impact ABS housing
  • Can be placed up to 1000′ away from the base station
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5-Year warranty
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Audio Monitoring Notice

When this equipment is used as part of an audio monitoring system, the law requires that the public be given notice of AUDIO MONITORING ON THE PREMISES.
Two decal notices are included with each microphone shipped.

Federal Law References: Federal Regulations, US Code, Title 18, Crime and Criminal Procedure. Sec 2510.

Documents

Instructions
 Download
Specifications
 Download

Integrators

Box Contents

(4) Verifact A, IF-4, AD-1, (4) Single RCA Cable, (4) RCA to 3.5mm Plugs (All cable lenghts 6ft.)

Installation Requirements

BELDEN 8451 OR EQUIVALENT

Compatibility

  • Encoders
  • IP Cameras
  • NVR

Placement

Ceiling  Surface Mount 

Use Cases

Banking
Education
Healthcare
Law Enforcement
Retail & C-Store
Security
Transportation

Specs

Adapter Input impedance
17.5 KΩ@ 1kHz
Adapter Output impedance
600Ω@1kHz
Dimensions
11 1⁄2”L x 4 3⁄4”W x 1 1⁄4”H
Weight
12.5 oz
Microphone Type
Electret Condenser
Microphone Output
Line Level (0 dB 600Ω @ 1 kHZ)
Microphone Dimensions
4"Dia x 1 1⁄2"H
Microphone Weight
3.5 oz
Certified:

Product Comparison


96 products
  Add Product
3’ Dropdown Mic Cable
6” Mic Element Assembly
Adjustable Gain Potentiometer
Audio Adapter Included
Audio Streaming
Audio Type
Base Station Included
Base Station Speaker Size
Built-in Preamp
Headphone Jack for Private Listening
Included Speaker Size
Install Environment
Mic Form Factor
Mic Type
Microphones in Kit
Mute Button
Mute Switch Included
Number of Zones
Pick-up Pattern
Pick-up Range
Playback Audio
Power Supply Included
Rack Mount Included
Requires Two-Way Base Station
Sensitivity Switch: Normal/Low
Speaker/Mics in Kit
Vandal Resistant
Voltage Requirement
Wire Distance
Wire Type
ASK-4® #300
LE-047
 No
 No
 Yes
IF-1
One-way (listen)
Line Level
N/A
N/A
 Yes
 No
N/A
Indoor
High impact anti static ABS housing
Electret condenser
1
 No
Not Included
1
Omni-directional
30ft. Diameter
 No
 Yes
 No
 No
 Yes
0
 No
12Vdc
Up to 1,000ft
2 conductor shielded, 22 gauge w/ 24 gauge drain
ASK-4® #302
LE-374
 No
 No
 Yes
IF-2
One-way (listen)
Line Level
N/A
N/A
 Yes
 No
N/A
Indoor
High impact anti static ABS housing
Electret condenser
2
 No
Not Included
2
Omni-directional
30ft. Diameter
 No
 Yes
 No
 No
 Yes
0
 No
12Vdc
Up to 1,000ft
2 conductor shielded, 22 gauge w/ 24 gauge drain
ASK-4® #304
LE-292
 No
 No
 Yes
IF-4
One-way (listen)
Line Level
N/A
N/A
 Yes
 No
N/A
Indoor
High impact anti static ABS housing
Electret condenser
4
 No
Not Included
4
Omni-directional
30ft. Diameter
 No
 Yes
 No
 No
 Yes
0
 No
12Vdc
Up to 1,000ft
2 conductor shielded, 22 gauge w/ 24 gauge drain
ASK-4® #350
LE-345
 No
 No
 Yes
IF-PX
One-way (listen)
Line Level
N/A
N/A
 Yes
 No
N/A
Indoor
High impact anti static ABS housing
Electret condenser
1
 No
Not Included
1
Omni-directional
30ft. Diameter
 No
 No
 No
 No
 Yes
0
 No
PoE IEEE802.3af optional external 12Vdc 800mA
Up to 1,000ft
2 conductor shielded, 22 gauge w/ 24 gauge drain
ASK-4® #371
LE-348
 No
 No
 Yes
IF-PX
Two-way (talk/listen)
Line Level
N/A
N/A
 Yes
 No
4”
Indoor
Durable, powder coated extruded aluminum housing
Electret condenser
0
 No
Not Included
1
Omni-directional
30ft. Diameter
 No
 No
 No
 No
 No
1
 No
PoE IEEE802.3af optional external 12Vdc 800mA
Up to 1,000ft
2 conductor shielded, 22 gauge w/ 24 gauge drain

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How to Buy

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