Kv series basic unit-im_e, The number of input points varies with the model, C3 to c8 are each independent – KEYENCE KV Series User Manual
Page 4: Internal circuit, Npn * for kv-10atp/kv-10dtp pnp, Npn * for kv-16atp/ kv-16dtp pnp, Npn * for kv-24atp/kv-24dtp pnp, Npn * for kv-40atp/kv-40dtp pnp
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