Electrical enclosure SATEL OPU-2 B — dimensions 158×46×126 mm for control modules

SATEL OPU-2 B is a compact plastic electrical enclosure intended for housing control and electronic modules in alarm, access control and building automation systems. Its external dimensions are 158×46×126 mm, with increased internal height to ease access to connectors and wiring. The case provides tidy mounting space for small devices, terminal blocks and PCB-based units and includes a tamper switch that signals opening. A dedicated bracket inside the enclosure allows installation of antennas with SMA connectors for GSM/GPRS communication modules.

Advantages

The enclosure combines a compact footprint with increased internal volume that facilitates connector access and cable routing. Its plastic construction ensures electrical insulation and lightweight handling while the integrated tamper switch adds a layer of physical security by detecting unauthorized opening. The internal mounting bracket supports common SMA antenna types, enabling neat attachment of GSM/GPRS antennas without additional adapters.

Suitable for

• Housing GSM/GPRS communication modules and modems
• Mounting small control modules and PCB-based devices
• Installation of terminal blocks and wiring junctions in alarm and access systems
• Applications requiring a tamper detection switch and antenna mounting

Key specifications

• External dimensions: 158 mm (width) × 46 mm (depth) × 126 mm (height)
• Material: plastic enclosure (electrically insulating, lightweight)
• Internal increased height/volume for easier connector access and cable coiling
• Integrated tamper switch for opening detection
• Internal bracket for mounting SMA-connector antennas
• Suitable for PCB-mounted devices, terminal blocks and small modules

How to use

Install the control or communication module on the internal mounting points and route the wiring to terminal blocks or connectors as required. Secure the antenna using the dedicated bracket and connect it to the module via the SMA connector, observing correct polarity and torque values recommended by the antenna manufacturer. Close the enclosure and verify the tamper switch operation with the connected control panel or monitoring device. Ensure cable entries and any cable glands used maintain mechanical strain relief and do not compromise the enclosure cover seating.

Usage recommendations

For reliable operation mount the enclosure on a flat, stable surface away from direct moisture and excessive heat. Leave sufficient space for ventilation around modules that generate heat, and avoid routing high-voltage lines inside the same enclosure as low-voltage control electronics. When installing an antenna, follow the antenna manufacturer’s installation instructions and verify that the SMA connector is tightened appropriately to avoid loss of signal or damage.