Supports PDT digital trunking, offering high-quality digital trunking voice services that meet the high standards of emergency communication, ensuring rapid response to professional customers' calls anytime and anywhere. Compared to traditional analog technology, PDT dual-slot technology provides double the channel capacity, greatly alleviating the increasing pressure on spectrum resources. Designed meticulously to comply with the national standard IIB explosion-proof standard, achieving Ex ib IIB T4 Gb/Ex ibD 21 T130°C explosion-proof certification and passing the national explosion-proof certification. Clear and loud sound, with a carefully optimized audio design and excellent audio encoder, ensures loud sound while maximizing the fidelity of the user's voice. Even in noisy environments, the initiator can be accurately identified and the call content clearly heard. Large battery capacity and long battery life, equipped with a 3350mAh high-capacity battery and power-saving design of digital technology, significantly extend the terminal's usage time, meeting the long working hours of frontline personnel and reducing the risk of battery replacement in explosion-proof areas. Excellent human-machine interaction design, based on the usage habits of professional customers, deeply developed human-machine interaction processes adhere to the operation and maintenance modes of professional terminals, enabling professional customers to quickly get started and operate proficiently. At the same time, the selection of components such as the classic screenless walkie-talkie operation scheme, high-volume speaker, and large-capacity battery assists professional customers in smoother usage, ensuring successful task completion in various work scenarios. Rich business functions, in addition to supporting standard voice and data services, continuously provide a variety of supplementary services. Through the expansion of supplementary services, the practicality of the terminal is enhanced, helping users work more efficiently. High-level security, with a hardened operating system and customized cluster applications, ensures terminal security. Professional customers can further enhance security by using hardware encryption cards for strong encryption of cluster voice, achieving higher security performance. Durable and reliable quality, the entire device meets IP68 protection rating, suitable for outdoor work. Multiple indicators such as impact, vibration, and solar radiation meet high reliability standards, making it capable of performing in various harsh working environments.