The RDL ST-ACR1 Line-Level Audio Controlled Relay 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.
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.
RDL ST-ACR1 Features
- Switching Controlled by Audio Signal
- Sensing of Line-Level Signal
- Silence Sensing
- DPDT Switching Contacts
- Open-Collector SLAVE Output
- ST-ACR1 Line-Level Audio Controlled Relay1
- Audio Input10 kΩ balanced bridging
- Input Connections
- May be connected balanced or unbalanced
- Control Output: Open-collector @ 25 mA suitable to drive indicators or slave LCR relay
- IndicatorsAudio threshold LED (for setting sensitivity)
- Retrigger Delay250 ms
- ContactsDouble-pole-double-throw
- Max. Switching Power60 W, 125 VA
- Max. Switching Voltage220 Vdc, 250 Vac
- Max. Switching Current2 A
- Activation Response Time25 ms
- Input Sensitivity-30 dBu to 0 dBu (adjustable)
- Relay Release Delay0.5 sec. to 5.0 sec. nominal (adjustable)
- Ambient Operating Environment0° C to 55° C
- Power RequirementGROUND-REFERENCED, 24 Vdc @ 50 mA* (*Assumes 20 mA max load at SLAVE output)
- DimensionsHeight: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
- Package TypeCardboard Box
- Package Dimensions2x2x4"
- Shipping Weight0.2 lbs
- WEEE weight0.15 lbs
