MCM Electronics

0.5 ~ 5 Second Delay Line Level Controlled Relay By Radio Design Labs (ST-ACR1) MCM Part #555-18872

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$94.99 
MSRP: $128.15
You Save: $33.16 (26 %)

Line-Level Audio Controlled Relay

The ST-ACR1 is an Audio Controlled Relay in the STICK-ON® series. These products are designed for quick, convenient installation, and reliable operation in a variety of control applications. The ST-ACR1 is designed to switch on line level sources.

Specifications Top

Two multiturn trimmers are provided. The SENS potentiometer adjusts the audio input sensitivity. A threshold LED facilitates accurate adjustment. The module can be set to trigger on signals between -30 dBu and 0 dBu. The DELAY control sets the time required for the relay to release when the audio drops below the threshold.

The delay adjustment range for the ST-ACR1 is from 0.5 seconds to 5 seconds.

    Features
  • Switching Controlled by Audio Signal
  • Sensing of Line-Level Signal
  • Silence Sensing
  • DPDT Switching Contacts
  • Open-Collector SLAVE Output

Specifications
Audio Input: 10 Kohm balanced bridging
Input Connections: May be connected balanced or unbalanced
Control Output: Open-collector @ 25 mA suitable to drive indicators or slave LCR relay
Indicators: Audio threshold LED (for setting sensitivity)
Retrigger Delay: 250 ms
Contacts: Double-pole-double-throw
Max. Switching Power: 60 W, (220 VDC,125 VAC, 2A)
Activation Response Time: 25 ms
Input Sensitivity: -30 dBu to 0 dBu (adjustable)
Relay Release Delay: 0.5 sec. to 5.0 sec. nominal (adjustable)
Power Requirement
(Assumes 20 mA max load at SLAVE output):
GROUND-REFERENCED, 24 VDC @ 50 mA
Ambient Operating Environment: 0° C to 55° C


Part Numbers
MCM Part #:555-18872
Radio Design Labs Part #:ST-ACR1
Package Specifications & Dimensions
Weight:0.1 lbs.
Hazardous:No
RoHS Comp:Yes
Warranty:1095 days
Need to Return?
Length:4 in.
Width:2 in.
Height:2 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages
Catalog/Page:
MCM Cat 57, Page 149
MCM Cat 56, Page 165
View in Catalog

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