RAD-021 - Intercom Steren - Free user manual and instructions
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| Product Type | Intercom System |
| Model | RAD-021 |
| Brand | Steren |
| Category | Intercom / Door Phone |
| Communication | Two-way audio |
| Wiring | 2-wire connection |
| Call Function | Yes, with call button |
| Door Release Support | Yes (for compatible electric locks) |
| Volume Control | Adjustable |
| Power Supply | 12V DC, 500mA (adapter not included) |
| Current Consumption | < 50mA |
| Frequency Response | 300 Hz – 3.4 kHz |
| Mounting Type | Wall-mounted (surface or flush) |
| Dimensions | 180 x 100 x 35 mm (approx.) |
| Weight | 350 g (approx.) |
| Material | ABS plastic |
| Color | White |
| Operating Temperature | -10°C to 50°C |
| Certifications | CE, RoHS |
| Cleaning | Wipe with soft dry cloth |
| Maintenance | Periodic check of connections |
| Repairability | Spare parts available via manufacturer |
| Manual | Free PDF download from notice-facile.com |
Frequently Asked Questions - RAD-021 Steren
How do I install the Steren RAD-021 intercom?
Start by choosing a location near the entrance. Mount the outdoor unit at a height of about 1.5 m. Connect the two wires to the corresponding terminals of the indoor unit, following the polarity indicated in the manual. Use a 12V DC power supply for the main unit.
What power adapter is needed?
The RAD-021 requires a 12V DC adapter with at least 500mA of current. It is recommended to use a regulated power supply to avoid voltage fluctuations.
Does it support door release?
Yes, the RAD-021 has a door release output that can activate an electric strike or magnetic lock. Connect the lock wires to the designated terminals, and use the door release button on the indoor unit.
How do I adjust the volume?
The indoor unit has a volume control knob, usually located on the side or front panel. Turn it clockwise to increase the volume of the incoming audio.
Can I connect multiple indoor stations?
The RAD-021 is designed for a single indoor station. To connect multiple stations, you would need a multi-station intercom system or an additional adapter.
What is the wiring configuration?
The intercom uses a two-wire connection between the outdoor and indoor units. The wires carry both audio and power signals. Ensure that the polarity is respected: red wire to positive, black wire to negative.
Why is there no sound during a call?
Check that the power supply is properly connected. Verify the wiring connections at both units. Test the volume level. If the problem persists, there may be a faulty speaker or microphone, and service may be needed.
Is the RAD-021 weatherproof?
The outdoor unit is designed to withstand normal weather conditions such as rain and dust, meeting an IP rating (typically IP54). However, avoid exposing it to direct water jets or extreme temperatures.
Where can I download the manual?
You can download the user manual in PDF format from notice-facile.com. Simply search for "Steren RAD-021" and click the download button.
How to clean and maintain?
Clean the device with a soft, dry cloth. Do not use chemical solvents or abrasive cleaners. Check the wiring connections periodically and ensure the unit is not obstructed by objects that could block the speaker or microphone.
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USER MANUAL RAD-021 Steren
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Product information
Brand : Steren
Model : RAD-021
Category : Intercom