... protection, reversed input protection Water Proof, Standard type HID Ballast for HID Working Lights_SM-550A Item No. SM-550A Power: ... Offered - Shipping: by sea or air HID Ballast for HID Working Lights_SM-550B HID Ballast for HID Working Lights_SM-550[About Sammoon]Sammoon Lighting & ... (international) Electro-Optical-Source Lighting Market, Foshan, China HID Ballast for HID Working Lights_SM-550A