Start here for access to our Knowledge Base to get answers to over one hundred thousand questions online in seconds.Find Answers
...See what we've been doing in some of our major markets.Find your Location
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
What is difference between XALK194H7 and XALK198H7
Harmony Control Stations
XALK198H7 is listed as replacement for obsolete XALK194H7
The XALK198H7 uses a 22mm trigger action push/pull operator (ZB5AT84) whereas the XALK194H7 used a 22mm non-trigger action type (ZB5AT4). The 22mm non-trigger action emergency stop/off operators have been obsoleted along with their associated preassembled components. Practically, both switches are identical in function. The ZB5AT84 trigger action is longer than the ZB5AT4 non-trigger action by 5mm measured from the front of the enclosure to the front of the button.