Cync wall switches differ in neutral wire and Matter.
The no-neutral on/off switch, dimmer and motion dimmer suit homes without a neutral wire. The neutral-wire on/off switch, dimmers and fan switch are Cync app switches without Matter. The Matter switches are the button dimmer, the button dimmer with motion sensor, the keypad dimmer, the paddle dimmer, the multi-way on/off switch and the ceiling fan switch. GE Lighting lists a neutral wire as required on each of them, and a traveler wire on the multi-way, keypad and paddle models.