Water-soluble salt (mg/m2): 0 to 199.9 Power supply (V): 2 x AA alkaline batteries (main unit), 1 x 6F22 dry battery (probe) Power supply: 2 x AA alkaline batteries (main unit), 1 x 6F22 dry battery (probe) Probe dimensions (mm): φ94 x 104 身体尺寸(mm):75 x 37.5 x 187.5