Main Features
The JR320-SC-4G Emergency Intercom is designed with a robust cold-rolled steel housing and a stainless steel panel, ensuring durability and resistance to vandalism. It is waterproof with an IP55-IP65 rating and features advanced noise reduction technology for high-definition calls. The device supports 4G wireless communication and allows remote configuration. It is equipped with a hands-free operation button for emergency calls, a noise-cancelling microphone, and a built-in 2W speaker. The intercom includes an LED lamp that blinks during incoming calls and remains on during a call to draw attention. It is suitable for outdoor use in high-risk areas like highways and campuses.

Technical Specifications
The intercom uses the 4G Module EC25, supporting various regional frequencies and GPS/GLONASS/BeiDou (Compass)/Galileo/QZSS options. It operates on a 12V DC power supply with a power consumption of 0.3W when idle and 1.5W during operation. The device allows remote configuration via SMS and enforces a call time limit of 6-8 minutes. It 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
The JR320-SC-4G is suitable for various environments including metro stations, airports, business centers, hospitals, schools, highways, tunnels, and railways. It can be integrated with optional accessories like multiple button options and broadcast horns. The device connects to the operator's network via a SIM card for communication.

Dimensions and Packaging
The unit size is 800*285*225 mm, with shipping dimensions of 850*330*250 mm. It is packaged with foam padding in a carton, with a gross weight of 15 kg and a net weight of 12 kg.