These full featured, 2 function, hardwire decoders are small enough for N Scale, but strong enough for HO. Each is equipped with auto-adjusting BEMF for outstanding slow speed performance and hassle-free set up. Also includes Quiet Drive for super quiet engine performance. Dimensions: 0.365 x 0.587 x 0.109′ 9.27 x 14.91 x 2.77mmWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov