LapMonitor Transponder with JST Connector. Designed to be paired with the Lap Counter (LPM01000 - Sold Separately) for RC racing enthusiasts looking for a reliable, portable and user-friendly transponder to enhance their practice and racing experience without hurting the bank! Features: Separated LED for convienece and universal fitment even with fully painted bodies Change the ID at any time among 10 values Compact and lightweight design Accurate and super responsive User friendly and easy to connect Reliable and strong connection Training and race modes Specifications: Length: 1.41in (35.9mm) LED Wire Length: 4.26in (108.22mm) Width: 0.713in (18.11mm) Height: 0.235in (8.25mm) Weight: 8g Input Voltage: DC 3.7-9.0V IR range: 16.4-32.8ft (5-10m) Includes: (1) LapMonitor Transponder