Please note: please do not confuse this model (frequency 26.995 MHz) with the similar-looking model EINHELL F1024-1 (frequency 27.015 MHz). Please verify the frequency that is written on the remote control, or on the quartz (inside the casing). Also please do not confuse this model with the EINHELL H126 D with 10 switches inside instead of 9, as they are not compatible. Remote controls with different frequencies are not compatible.