Six Key Industrial Emergency Telephone is made of Fiber-Reinforced Plastic, without a cover design, and can be added with a dust cover. It has strong sealing performance and good waterproof effect. It is a full-digital network broadcasting and intercom. Stable and reliable; the hands-free adopts digital full-duplex mode, the voice is loud and clear, and can communicate clearly in a high-noise environment. Through six speed-dial keys, one-key call can be realized, and the function can be customized. After off-hook, press the button to talk. The hands-free speaker output provides onboard 2.4W output or can be connected to a 4Ω 3W through the built-in power amplifier board; broadcasting support Horn type 8Ω5W speaker.