Height Dynamics is offering a trade-in on any gas detector when purchasing a new MSA Altair 4 or 5 gas monitor, along with complimentary training. Buying 10 Altair units provides a free Galaxy 2 docking station. The MSA Altair range provides reduced maintenance costs, up to 50% savings on service with a 5-year sensor warranty, and benefits such as IP67 rating, drop resistance, easy bump testing and calibration, and fast response time.