From 26.9.2023 onwards, the vehicle underwent in-service validation tests without passengers and driver training.
In trial operation with passengers from 25.10.2023 to 4.11.2023
A B C D - Radio control channels, "No current mode"(stops the trolleybus from consuming current for a few seconds), Poles up/down, hazzard lights, Interior lights 1st/2nd group, interior light first group disabling near cabin(I think, our 27tr have that), cabin light, either panel light or 1st door light, mirror heating, ventilation towards outside/inside
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