Original KERUI J008 Wireless Strobe Siren Flashing Sensor 433MHz with Transimit for GSM WiFi Security Alarm Price: US$29.95 Free Shipping Buy Now For just US$29.95 , buy KERUI J008 Wireless Strobe Siren Flashing Sensor 433MHz with Transimit for GSM WiFi Security Alarm from the China wholesale webshop. Buy Now you can track your packages after an order has shipped.