LPR恒温技术是一种无外置开关驱动的新型的led驱动技术。 该技术主要采用三种可靠性元素构成：led光源、PPTC热敏电阻、R门限电阻。该技术直接把驱动及控制作为电路的一部分，有效地结合，实现了对led工作环境温度的调控。保障了可靠地运行、长寿命。减小产品体积的同时也大大降低了成本。
LPR constant temperature technology is a new type of led driver technology without external switch driver, which mainly usesthree high reliable elements: led light source, the PPTC thermistor and R threshold resistance. It directly makes the drive and control system be part of the circuit, and combines effectively to control temperature of working environment. This technologyensures reliable operation and long service life. Reducing products volume, at the same time it also declines the cost greatly.