Why you need this timer relay Reliable, adjustable timing without extra power supplies: accepts DC 6–30 V and a USB 5 V input so you can power and integrate it in a wide range of control systems and portable setups. Accurate, repeatable timing for automation: a versatile timing range and programmable profiles let you manual control and reduce human error. Interferenceresistant switching for long service life: optocoupler insulation protects signal integrity and supports more than 100,000 switching cycles for steady operation in industrial and hobby projects. Key benefits and problem solving Solves compatibility problems: supports both DC 6–30 V and USB 5 V so it works with standard controller outputs, batterypowered systems, and USB power supplies. Simplifies setup and repeatable tasks: an LCD shows current settings and lets you store three timing profiles so common operations are quick to recall. Reduces downtime and false triggers: advanced flip flop mode with optocoupler isolation reduces electrical interference and ensures dependable switching over many cycles. Main features (what it does) Wide voltage compatibility: DC 6–30 V input range plus a USB 5 V option for flexible powering and integration. Precision timing control: timer adjustable from 01 seconds to 9999 minutes for short pulses or long delays. LCD feedback and memory: builtin display shows active settings and stores up to three profiles for fast reuse. Advanced flip flop mode: togglestyle output behavior for on/off sequencing, with optocoupler insulation for signal protection. Durable switching: designed to exceed 100,000 switching cycles for reliable, longterm use. Performance and reliability Repeatable timing across a broad range of intervals for both short and long automation tasks. Optocoupler isolation reduces the impact of electrical noise on control signals. Memory for three profiles reduces configuration time and supports consistent operation. Practical applications Conveyor or material handling timing: set precise on/off periods or delays for conveyors, gates, or feeders to coordinate stages of a process. Lighting and irrigation control: schedule short pulses or long intervals to control lights, pumps, or solenoid valves without requiring a full PLC. Test bench and prototyping: use USB 5 V or DC supply to power the relay for repeatable cycle testing, component burnin, or automated functional checks. What to expect in operation Clear LCD readout of current timing and mode. Quick switching between stored profiles for repetitive tasks. Stable operation across common DC control voltages and USB power. Compatible use cases Integrates with microcontroller projects, industrial DC control panels, and portable USBpowered systems. Works in environments where electrical interference is present thanks to optocoupler insulation. Suitable for both short pulse timing and long delay applications up to 9999 minutes. Specifications (as provided) Input voltage: DC 6–30 V; USB 5 V supported Timing range: 01 seconds to 9999 minutes Display: LCD showing settings Memory: Stores three timing profiles Mode: Advanced flip flop function with optocoupler insulation Durability: Over 100,000 switching cycles Ordering note Confirm your system voltage and intended timing range before installation to ensure proper configuration and reliable operation.