Overview
The ST-ACR2 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-ACR2 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-ACR2 is from 5 seconds to 50 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 k? 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, 125 VA |
| Max. Switching Voltage | 220 Vdc, 250 Vac |
| Max. Switching Current | 2 A |
| Activation Response Time | 25 ms |
| Input Sensitivity | -30 dBu to 0 dBu (adjustable) |
| Relay Release Delay | 5 sec. to 50 sec. nominal (adjustable) |
| Ambient Operating Environment | 0° C to 55° C |
| Power Requirement
GROUND-REFERENCED, 24 Vdc @ 50 mA*
* Assumes 20 mA max load at SLAVE output | |
| Dimensions | Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm) |
| Package Type | Cardboard Box |
| Package Dimensions | 2 x 2 x 4 in. |
| Shipping Weight | 0.2 lbs. |
| WEEE weight | 0.15 lbs. |
| Tariff code | 8536.49.0050 |