Default: common anode signals. O scale signal. top may shows Green / middle shows Yellow / down shows Red. with screw base for easy installation.
2Pcs O Scale Model Train Block Signals 3Aspects Railway Layouts LED Light Silver
2Pcs O Scale Model Train Block Signals 3Aspects Railway Layouts LED Light,Silver
Complete Signal O Scale 3 Aspects Block Signals For 12V DC To 16V DC LED Light
O Scale Model Railway Block Signals Train LED Light Silver Easy Installation
