TB35 Mechanical Timer with Iron Case Durable iron case provides long lasting stability and reliability. Memory supports up to 96 on/off intervals to fit daily schedules. 24hour timing with builtin battery backup ensures uninterrupted operation and stable control during power outages. performance in a compact, fully sealed unit. Rugged construction and extended mechanical life make it suitable for demanding environments. Flexible control modes: infinite cycle capability, a maximum 24hour program length, and batterybacked timing after outages. Broad compatibility for control of fans, pumps, lights, irrigation, and other automation tasks in industrial, commercial, and greenhouse settings. Usage scenarios: Industrial ventilation and pump control in warehouses or manufacturing spaces. Energysaving lighting schedules for offices, shops, or schools. Greenhouse climate and irrigation automation where reliable timing and outage resilience are important.