RDL STACR1 [Restock Item] Line-Level Audio Controlled Relay

ST-ACR1 module is designed to switch on LINE-LEVEL sources. Its relatively short release delay time makes it the optimum choice for voice applications.

Each of the ST-ACR products is an Audio Controlled Relay in the group of STICK-ON series products by Radio Design Labs. These products are designed for quick, convenient installation, and reliable operation in a variety of control applications.

This is a Restock item that has had its box opened or has been repackaged. It may have minor cosmetic flaws and may have been sold to a customer and returned. Please contact your Sales Pro for more information on this and other products.

RDL STACR1 [Restock Item] Applications:

RDL STACR1 [Restock Item] Includes:

RDL STACR1 [Restock Item] Features:

• • High-impedance bridging input connects across any audio line
  • Input may be connected to either balanced or unbalanced sources
  • Multi-turn sensitivity adjustment permits precise threshold setting
  • Multi-turn DELAY control adjusts relay release delay
  • Bandpass filtering yields triggering on characteristic audio spectrum
  • SECONDARY open-collector terminal allows additional relays to be added for more contacts (Radio Design Labs' ST-LCR1 or ST-LCR2)
  • SECONDARY terminal may be used with remote switch to manually override the control circuit and turn on the relay

RDL STACR1 [Restock Item] Specifications:

• • Audio Input: 10 kΩ balanced bridging
  • Input Connections: May be connected balanced or unbalanced
  • Control Output: Open-collector @ 100 mA Suitable to drive indicators or Secondary LCR's
  • Indicators: Audio threshold LED (for setting sensitivity level)
  • Retrigger Delay: approximately 250 ms
  • Relay Contacts: Double-Pole-Double-Throw
  • Maximum Switching Power: 60 W, 125 VA
  • Maximum Switching Voltage: 220 Vdc, 250 Vac
  • Maximum Switching Current: 2 A
  • Maximum Carrying Current: 3 A
  • Power Requirement: 24 to 33 Vdc @ 50 mA, Ground-Referenced
  • Input Sensitivity: Adjustable -30 dBu to 0 dBu This provides switching at a -20 dB threshold for signals of -10 dBu to +20 dBu
  • Relay Release Delay: Multiturn adjustable 0.5 sec. to 5.0 sec. nominal
  • Activation Response Time: 25 ms