A. Programmable mechanical timer will make your life smarter and more convenient. DIN rail mounted, easy to install. B. Features: 1. Mechanical timer: Large dial with clear scale; Quartz mechanism will start automatically after a few minutes after power on. 2. Easy to use: 24 - hour timer with manual switch, supports scheduling (automatic on/off according to schedule) and continuous on/off. 3. Built - in battery for emergency installation on DIN rail: easy to assemble and disassemble, flexible use. 4. Compact size and light weight make it easy to install. 5. Transparent dust cover: dust and water splash resistant, prolonging the service life. Transparent design does not affect the dial display. 6. Widely used: street lights, ventilation systems, fountains, advertising signs, production equipment, radio and television equipment, etc. For dry rooms only. C. Note: 1. Installation should be carried out by a qualified electrician. 2. Please read the instruction manual carefully before use. 3. Due to manual measurement and lighting differences, the size and color may be slightly different. Thank you for your understanding. D. Specifications: 1. SUL181h: - Model, voltage: SUL181h, AC110 - 230V/SUL181h, DC12V - Material: ABS - Built - in battery: 1.2V 40mAh NI - MH battery - Color: Gray - Contact capacity: 16A - Power: 2W - Minimum interval: 30min - Switching time: 30min/hour, 48 times - Power reserve: 150h - Contact resistance: ≤50mΩ - Insulation resistance: ≥100mΩ - Product size: 54 x 68 x 110mm - Package size: 11.5 * 7.5 * 6cm / 4.53 * 2.95 * 2.36in - Package weight: 192g / 6.77oz 2. SUL181d, AC110 - 230V: - Color: white or gray (sent randomly) - Power: 1W - Frequency: 50 - 60Hz - Switching capacity: 16A, 250V~, cosφ = 1; 4A, 250V~, cosφ = 0.6 - Incandescent lamp load: 1100W - Time range: 24h - Minimum interval: 15min - Setting time: 15min/hour, 96 times - Reserve: 200h (230V); 100H (110V) - Product dimensions: 54*65*90mm/2.13*2.56*3.54in - Package size: 9.8*7*6cm/3.86*2.76*2.36in - Package weight: 135g/4.76oz 3. SUL180a, AC220 - 240V: - Color: gray - Contact capacity: 16A - Power: 1W - Frequency: 50 - 60Hz - Load: 1000W incandescent lamp; 150W energy - saving lamp - Time range: 24 hours. - Minimum interval: 15 minutes. - Setting time: 15 minutes/hour, 96 times - Reserve: 72 hours. - Contact resistance: ≤ 50mΩ. - Insulation resistance: ≥ 100 mΩ - Package size: 9.8 x 7 x 2 cm / 3.86 x 2.76 x 0.79 inch - Package weight: 85 g / 2.98 oz E. Packing list: 1. 1 * Timer 2. 1 * User manual (English)