It looks like a standard 2 function decoder. Size is small. I have never used one, but there is no reason not to. These are the smallest decoders available: ESU Lokpilot Mini: 10.5mm x 8.1mm x 2.8mm Lenz Silver Mini: L 11mm x W 9mm x H 2.89mm Uhlenbrock Comfort Mini: 10.8mm x 7.5mm x 2.4mm CT Elektronik DCX75: 11 x 7.2. x 1.4 mm Zimo MX620: 13.5 x 8.8 x 2.5mm Digitrax DZ125: 10.6mm x 8.7mm x 2.86mm NCE Z14SR: 8.6mm x 14.5mm x 3.3mm TCS Z2: 12.95mm. X 6.65mm. X 2.79mm
