Instruction Manual: 1. After setting the data, wait 6 seconds; the module automatically saves the memory set data. 2. Press the SET key to enter the time setting mode; the red LED flashes. Press the key to increase or decrease the setting time T1. 3. After setting time T1, short press the SET key again; the green LED flashes. Set time T2 by pressing the key. After completing T2 setting, press the SET key again; the system automatically saves the memory setting or wait for 6 seconds, after which the module saves the data automatically. 4. Long press the SET key to enter parameter setting mode. There are two sets of parameters to select: P0 and P1. Short press SET to switch between P0 and P1 in the current mode. 5. In P0, adjust the timing mode by pressing the key. In P1, set the operating mode using the up and down keys. P0--0: T1 timing unit is seconds P0--1: T1 timing unit is minutes P0--2: T1 timing unit is hours P1--0: Delay T1 time, relay pulls in (T1 timer) P1--1: Relay releases after T1 delay (T1 timer) P1--2: Delay T1 time, relay pulls in (T1 timer), then relay releases after T2 delay (T2 timer), then stops P1--3: Relay releases after T1 delay (T1 timer), then delay T2 time, relay pulls in (T2 timer), then stops P1--4: Delay T1 time, relay pulls in (T1 timer), then relay releases after T2 delay (T2 timer), cycle repeats P1--5: Relay releases after T1 delay (T1 timer), then delay T2 time, relay pulls in (T2 timer), cycle repeats Specifications: Timing range: 0-999 seconds, 0-999 minutes, 0-999 hours Relay: 20A Operating current: 10A (maximum) Power: 1500W (maximum) Size: 79 x 26 x 43mm / 2.99 x 1.02 x 1.69 inches Panel cutout size: 72 x 40mm / 2.83 x 1.57 inches Type: Time Relay Contact Load: Low Power Model Number: Digital Time Delay Relay Usage: Voltage: AC110-220V Color: Grey Material: Plastic Package Contents: 1 x Dual Display Delay Relay Note: Light and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement error is +/- 1-3cm.