Descriptions Time switch controls any electrical installation by means of daily programs. Installation: The switch is protected internally against interference by a safety device, however, partically strong electromagnetic fields may alter its operation. Such interference can be avoided by adhering to the following recommendations during the installations: -The device should not be installed near inductive loads(motors, transformers, contactors,etc...). -A separate power line is recommended(equipped with a filter if necessary). -Inductive loads should be equipped with interference suppressors(varistor, RC filter). If the time switch is to be used in combination with other devises; it is necessary to verify that no parastic disturbances will be caused by the group. Application: SUL180a can be widely used in the neon lights, water heaters, street lamps, staircase lights, aquaculture, garden watering, motors, advertising boxes, office automation and other civilian or industrial electricity needs time control of the occasion, according to the required time for automatic control. Specifications: Auxiliary Power Supply: 110-240V AC, 45/60Hz Switching Contact: 16(4) A 240V AC Burden: 0.5W Precision: ±3sec./24h at 22℃ Working Temperature: -10℃ to +50℃ Storage Temperature: -25℃to +70℃ Drive Mode: Quartz Motor Back-up Time: 100h Type of Dial: Daily 96 Pins Minimum Setting Interval: Daily 15 Minutes Manual Operating Switch: 2 Positions: ON-Automatic Dimensions: 1 Din Protection Degree: IP20 as per EN60529 Max Length: 90.4mm/3.56" Width: 17.7mm/0.7" Height: 59.2mm/2.33" Quantity: 1 Set Note: Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Time Switch 1 x User Manual