The Vershoven iZH2 is an intrinsically safe telephone secondary handset, specifically designed for use in explosive atmospheres. It is used in conjunction with telephone models A24 and dA24 and features a compact, ergonomic design that fits comfortably in the hand. The device is equipped with a coiled cable, enabling a flexible and mobile connection to the telephone. Certification is granted according to the EC type-examination certificate TÜV 03 ATEX 2287, with certification valid only when used in conjunction with the dA24 telephone.

Applications
The iZH2 is intended for industrial applications in areas with explosion hazards, such as in the chemical, petrochemical, or energy industries. Its intrinsically safe design ensures that the device does not generate any spark-capable sparks, thereby enhancing safety in hazardous work environments. The weather-resistant design also makes the handset suitable for outdoor use, where it is protected against dust and splashing water.

Functions and Specifications in Detail
The enclosure is made of black ABS plastic and is compact in size, measuring 31.5 mm (length) × 42 mm (width) × 120 mm (height). The weight is 65 g, enabling easy handling. The handset features a dynamic earpiece that ensures clear voice transmission. The impedance is 250 Ohm, ensuring compatibility with the connected telephones. The frequency response ranges from 200 Hz to 4000 Hz, providing sufficient speech intelligibility.

Technology Explained Simply
The protection type II 2 G EEx ib T6 indicates that the device is suitable for use in gas atmospheres of Category 2 (moderate explosion hazard). The IP54 protection rating safeguards against dust and splashing water, allowing use outdoors or in damp indoor environments. The cable entry is via an M12 x 1.5 threaded connection, ensuring a secure and tight connection to the telephone. The coiled cable provides flexible movement without losing the connection.

Compatibility and Accessories
The iZH2 is specifically designed for Vershoven telephone models A24 and dA24. However, certification according to TÜV 03 ATEX 2287 is only valid when used with the dA24 telephone. This is a secondary handset intended for supplementary use with the main telephone, enabling communication in hazardous areas.

Installation and Mounting
Installation is performed by connecting the coiled cable to the telephone via the M12 x 1.5 connector. No additional mounting work or tools are required. The handset is directly attached to the telephone and can be put into operation immediately.

Operational Advantages
The iZH2 provides a safe communication solution in explosive environments without requiring additional safety measures. Its compact design and low weight facilitate easy handling, while the weather-resistant construction enables use under various environmental conditions. Use in conjunction with the dA24 telephone ensures compliance with ATEX directive requirements.