Main Features
The JR211-1B-4G is a vandal-resistant telephone designed for robust environments. It features a brushed stainless steel housing with an IP65 protection level, ensuring resistance to dust and water. The device supports 4G wireless communication and is equipped with advanced noise reduction technology for clear HD calls. It is compliant with CE, FCC, RoHS, IK10, IP65, and ISO9001 standards. The telephone includes a single vandal-resistant metal button for one-click calling and an ABS material handset with a noise-cancelling microphone and an 83 cm armored cord. The handset is compatible with hearing aids and features a magnetic reed hook-switch. The device is designed for easy desk mounting and installation.

Technical Specifications
The telephone operates on a 4G module EC25, supporting various frequency bands across different regions, including EMEA, Korea, Thailand, India, Japan, America, and Latin America. It supports GPS, GLONASS, BeiDou, Galileo, and QZSS 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 allows remote configuration via SMS and supports remote monitoring and auto-dialing. It enforces a call 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. The device has a mean time between failures (MTBF) exceeding 50,000 hours.

Applications
The JR211-1B-4G is suitable for environments prone to vandalism, such as parking lots, prisons, airports, railways, metro stations, ATMs, platforms, hospitals, police stations, shopping malls, and stadiums. It requires a SIM card for 4G connectivity and can be used with optional accessories like acoustic hoods, broadcast horns, and LED beacon lights.

Dimensions and Packaging
The unit size is 250x120x160 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.