Feature:1. Multiple solar road stud lights can flash simultaneously within one kilometer.2. Wireless synchronous solar road stud light can control board without worrying.3. This circuit board module is very convenient to guide high-speed exit signs.4. This circuit board module is very suitable for 1.2V Ni-MH battery with 2V solar panel.5. The lighting mode is light-controlled induction, and flashing 60 times per minute.Specification:Item Type: Solar Lamp Circuit BoardMaterial: ABSApplied Battery Voltage: 1.2V Ni-MH batterySolar Panel Applicable Voltage: 2V <0.3WLED: <3V light emitting diode. 6 or 8 pcs.Lighting Mode: Light control sensor-flashing 60 times per minute.Synchronous Flashing Mode: 2.4G wireless synchronizationSuggested Installation Distance: It is recommended to install one at a distance of 20 meters Package List:1 x Circuit Board1 x User ManualNote:The installation distance should not exceed 50 meters. Otherwise it will not flash at the same time.