Main Features
The JR204-CB-4G is a vandal-resistant telephone designed for robust communication in challenging environments. It features 4G wireless communication with remote configuration capabilities, a hotline telephone without a keypad, and an ABS material handset with a noise-cancelling microphone. The handset is compatible with hearing aids and includes a magnetic reed hook-switch. The device is wall-mounted for easy installation and housed in a corrosion-resistant stainless steel or cold-rolled steel box, ensuring durability and resistance to vandalism. It is ideal for use in locations such as parking lots, prisons, airports, and hospitals. The telephone meets several standards, including CE, FCC, RoHS, IK10, IP65, and ISO9001.

Technical Specifications
The JR204-CB-4G utilizes the 4G Module EC25, supporting various regional frequency bands for LTE-FDD, LTE-TDD, WCDMA, and GSM/EDGE. It includes GPS/GLONASS/BeiDou (Compass)/Galileo/QZSS options for navigation. The power supply ranges from 7.4V to 12V DC, with a power consumption of 0.3W when idle and 1.5W during operation. The device supports remote configuration via SMS, remote monitoring, and auto-dial numbers. It enforces a fixed call maximum time limit of 6-8 minutes and can report diagnostics such as low battery voltage and weak signal. The operating temperature ranges from -40°C to 65°C, with a storage temperature of -40°C to 75°C, and it has a mean time between failures (MTBF) exceeding 50,000 hours.

Applications and Accessories
The JR204-CB-4G is suitable for various applications, including metro stations, airports, business centers, bus stations, banks, hospitals, schools, and prisons. Optional accessories include an acoustic hood, broadcast horn, LED beacon light, and acousto-optical alarm.

Dimensions and Packaging
The unit size is 210x140x127.6 mm, with shipping dimensions of 340x235x165 mm. It is packaged with foam padding in a carton, with a net weight of 3 kg and a gross weight of 4 kg.