For effective communication, a message must be sent, received and understood. Sounds simple enough, but when working in a confined space with noise, machinery, and respiratory protective equipment in place, communication can be a challenge. Confined spaces can also create an echo that interferes with clear communication. If there is an emergency situation, you can add anxiety and labored breath to the equation. All this highlights the need for a clear and reliable confined space communication system. Radios are often a popular way for teams to talk back and forth. But radios are significantly limited in a confined space by signal strength, interference from nearby electrical equipment, and other issues like battery strength. The solution? The Con-Space Hardline communication system. Our basic Con-Space Communications Kit provides clear communication between an outside attendant and a confined space entrant. And it works 100% of the time. It includes a throat mic, headset, and alarm button for the entrant. The throat mic is the best on the market. It straps around the throat (obviously) and provides clear communication even in high noise environments or when the speaker is wearing a respirator mask. The headsets are connected with thermal plastic cable that is just as tough as the rest of the system. Military-grade connector with gold-plated contacts and o-rings attach the different pieces of the system. These connectors are ready for anything, and will continue working even if the components are dragged through the mud or get wet. Up top, the attendant's headset attaches to the CSI-1100 Mini Module, which is the power supply for the unit. It's intrinsically safe and with just four AA batteries the system will last up to 200 continuous hours. Don't trust the lives of your confined space team to tugs on a rope or hand signals. Get a Con-Space communication system and make sure you get your message across. If you'd like to discuss options for customizing the Con-Space Hardline System beyond the basic kit, please contact PK Safety's Customer Service Department at 1-800-829-9580. We'll be happy to assist in matching the Con-Space Hardline System to your specific needs.