How to recharge without sunlight Continuous rainy days or foggy days, the solar powered siren strobe max last 2-3 weeks in standby mode or if could not find proper sunlight place to install siren strobe , how to charge it? Solution 1st, You can use a light bulb. As video demo, if solar panel well get touch of light, the orange charging light in the end of red housing will keep on. Will suggest to install a bulb on the top of solar panel of siren strobe so could absorb light from it. Please go to YouTube, and search title ‘’How to use bulb light to charge solar powered siren strobe by JCHENG’’ for reference. Solution 2nd, you could use a DC12V power adapter to direct charge for 3-4 hours then the siren strobe could last another 2-3 weeks, or you could directly connect the power adapter with it permanently. JCHENG SECURITY provide a free power adapter for every customer who buy siren strobe from us. Come to get it! For connection guide, please take reference to the 3rd image of this product page. Technical parameter： solar panel: DC5V/150mA Wireless frequency:433MHz Receiving code mode：EV1527 Receiving distance:≥100M（Open space） Alarm sound:110dB Back-up battery: Li-ion battery 3.7V/1200MA Boundary dimension:262x195x61mm Power supply: DC 3.7V (3.7V/1200mAh rechargeable Li-ion) Max output current from solar pane:5V/1.3W/150mA Standby current: ≤8~15mA Alarm current: ≤180mA Standby:≥15daysWireless receiving distance：≥100M Wireless receiving frequency: 433MHz Working humidity: ≤80%RH(No freezing) Working temperature: -30~70℃ Wired defense zones:2 zones（Z0,Z1） Anti-tamper:1（TMP） Package includes: 1 x wireless solar siren 1 x JC Full English User Manual
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