Radix Rate Indicators in enclosures certified flameproof for gas groups I, IIA and IIB. With an IP65 rating, these enclosures offer excellent protection against water and dirt. The rate-indicators are programmable on-site via push buttons on the enclosure that trigger membrane keys on the product inside. These rate-indicators have the same features as their non-flameproof counterparts - high accuracy, measurement up to 5 kHz and even display measured values through the tough glass front of the enclosure.