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A02 (remarks illuminated and symbols)

B02 (remarks illuminated and symbols)

C02 (remarks luminous and symbols)

Note: A02 only has up and down keys; B02 has up and down keys, numeric keys, and door-opening keys; C02 has door-opening and numeric keys. Model R34V3.0.0 can be replaced with B02. W is white light, Y is yellow light, and B is blue light.