Founded in 1988, PLC is the earliest manufacturer of professional car burglar alarm systems in China. PLC has introduced more than 30 production lines, and has been equipped with automotive safety products for Honda, Isuzu and other enterprises for a long time. Nowadays, its product line has expanded to automotive products such as automotive reversing radar, in-vehicle audio and video navigation, HID xenon lamp, etc., occupying part of the reversing radar market.
 
The reversing radar of the PLC adopts dual CPU technology and anti-strong electromagnetic wave technology, which has a strong ability to resist external electromagnetic interference, which reduces the possibility of false alarm of the probe. 3600, 4600 and 6600 are PLC's main reversing radar models, priced at about 200 yuan. The early warning method of 6600 and 3600 is the same, and both use the left and right segments to display the buzzer alarm. The 6600 can only provide a maximum of 4 rear parking probes, and users who want to install a front probe are advised to purchase the 3600 with 6 probes. The 4600 is the only orange screen display reversing radar in the PLC, with the highest accuracy of 0.01 meters. Its matrix positioning and the early warning mode of real voice/buzzer switching can bring better display effect.
 
In general, the price of PLC reversing radar products is higher, generally within 500 yuan. Although the official claim is to use dual CPU technology, but combined with the performance of the product, the strength has not been greatly improved, most of the products have a detection range of 0.4-2.3 meters, but the accuracy is only 0.1 meters. Because of this, PLC's reversing radar products are difficult to be satisfactory whether they are in the high-end market or the mass market with the main cost performance.