壁挂式吡咯烷酮气体报警器探头TD500S-C4H7NO 量程范围可选 ¥18800.00 壁挂式氟气气体报警器探头TD500S-F2 三线制输出 ¥18800.00 壁挂式乙醛气体报警器探头TD500S-C2H4O 遥控器操作 ¥18800.00 壁挂式石油液化气泄漏气体报警器探头TD500S-ex 遥控器操作 ¥18800.00 壁挂式氙气气体报警器探头TD500S-Xe 声光二级报警 ¥18800.00 壁挂式氯气气体报警器探头TD500S-CL2 声光二级报警 ¥18800.00