XTM-700B(LED) is an all-metal construction Fail Secure electric bolt .with 304 stainless steel solid bolt and 2000kg holding force. It can be worked at the temperature of 60 ? or -40 ? based on the all-metal linkage parts. With the multiple designs of durable magnetic valve, special photoelectric control system, ultra-low temperature and power consumption design, anti-intrusion and smart circuit.