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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.