The TriplePlus + personal multi-gas confined space entry monitor simultaneously monitors, displays and alarms for one to four gases using field interchangeable smart sensors ideal for many applications. It has a built-in electric air pump option, or uses diffusion style. The extremely durable Triax case and internal construction ensures the monitor will not break if dropped. It also floats when necessary. The unit features an internal datalogger with a memory backup battery. It is water resistant, dustproof and highly RF-shielded.