Overview
Each of the ST-ACR products 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-ACR-1M is designed to switch on low-level sources, such as microphones or mic-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 -65 dBu and -20 dBu. The DELAY control sets the time required for the relay to release when the audio drops below the threshold. The adjustment range is from 0.5 seconds to 5 seconds.
Features
- Switching Controlled by Audio Signal
- Sensing of Microphone-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, (220 Vdc, 125 Vac, 2A) |
| Activation response time | 25 ms |
| Input Sensitivity | -60 dBu to -20 dBu (adjustable) |
| Relay Release Delay | 0.5 sec. to 5.0 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 | 0.145 lbs. |
| Tariff code | 8536.49.0050 |
