KG817J LCD Display Digital Programmable Timer

Technical Parameters

Product Overview

① KG817J is an LCD DIN rail mounted programmable digital timer switch. It adopts identical supply and load voltage, with the same mounting size as 2P DZ47 circuit breakers for standard DIN rail installation inside distribution boxes.

② It supports 24 groups of ON/OFF timing schedules, cyclic timing and countdown functions. Manual load override is available anytime, equipped with weekly automatic time calibration.

③ A built-in lithium battery sustains clock operation, LCD display and timing data storage during power failure. It is widely used for periodic automatic start-stop control of lighting, water pumps, fans and breeding equipment.

Product Features

① Identical supply and load voltage; dimensions consistent with 2P DZ47 breakers for easy integrated installation in distribution boxes.

② 35mm standard DIN rail buckle design enables quick assembly and disassembly, saving cabinet space.

③ 24 ON/OFF timing groups are configurable; manual forced load switching is accessible anytime during operation.

④ The built-in lithium battery maintains operation and screen display after power cut without resetting timing programs repeatedly.

⑤ Cyclic timing adjustable range: 1 second ~ 23h 59m 59s.

⑥ Weekly automatic time correction, timing error limited within ±30 seconds.

⑦ Countdown adjustable range: 1 second ~ 23h 59m 59s.

⑧ Automatically switches equipment on and off daily and weekly per preset schedules.

Working Principle

① After power-on, the main control chip drives the built-in clock module for continuous timekeeping and calls user preset timing programs.

② The system compares real-time time with preset timing points. When the scheduled time arrives, the internal relay is activated to switch loads; manual override is supported at all times.

③ The lithium battery independently powers the clock module during power failure to ensure continuous timekeeping. Periodic automatic calibration reduces cumulative timing error after long-term operation.

④ Cyclic timing and countdown run independently via the main control chip and can be combined with weekly timing.

Materials & Structure

① Flame-retardant, high-temperature resistant insulating plastic housing; 35mm standard DIN rail buckle structure with the same size as 2P DZ47 circuit breakers.

② Internal components include LCD screen, main control PCB, electromagnetic relay, power circuit, lithium battery pack and wiring terminals.

③ Operation buttons are arranged on the front panel; high-conductivity copper terminals are fixed by screws for stable wiring. The compact body allows dense side-by-side installation.

Application Fields

① Lighting System: Timing control for street lamps, billboard light boxes, landscape lighting and factory lighting.

② Electromechanical Equipment: Cyclic timing and countdown control for water pumps, fans, heaters and breeding spraying devices.

③ Agricultural & Commercial Electricity: Timing management for greenhouse equipment, store appliances, charging pile auxiliary control and security equipment.

Industry Solutions

① Lighting Project: 24 timing groups realize segmented lighting control to meet demands of different periods and achieve energy conservation.

② Breeding & Greenhouse Solution: Cyclic intermittent timing runs ventilation and spraying equipment to optimize internal environment and cut power consumption.

③ Integrated Distribution Solution: Dimensionally compatible with 2-pole miniature breakers for side-by-side installation and integrated electrical control configuration.

OEM/ODM Capability

① Software Customization: Adjust timing groups, cycle/countdown range, automatic calibration cycle and screen display content.

② Appearance Customization: Custom LOGO & model printing on housing, panel text revision and display parameter optimization.

③ Accessory Customization: Custom user manuals and color boxes; adjustable relay rated current and factory default parameters.

Customization Process

① Demand Confirmation: Confirm hardware & software modification requirements, electrical parameters, printing scheme, packaging, MOQ and lead time via communication.

② Scheme Design & Sampling: Deliver technical proposals and produce prototypes for customer functional verification and acceptance.

③ Mass Delivery: Place formal orders after prototype approval, launch mass production, and arrange shipment after inspection and packaging.

Production Capacity

① Automatic production lines finish PCB soldering, assembly and power aging tests to guarantee consistent product quality in batches.

② Independent electronic workshop and experienced production team deliver stable output to fulfill large-volume standard and ODM orders.

③ Flexible production lines support standard KG817J and revised customized models to satisfy diversified customer demands.

Quality Control

① Incoming Inspection: Sampling appearance and electrical tests for PCB, relays, LCD screens, lithium batteries and plastic housings before warehousing.

② On-line Inspection: Power-on tests for semi-finished products covering timing, cycle, countdown, manual switching and clock operation.

③ Finished Product Control: Long-term aging test for complete units; full-function recheck before shipment to verify power-off memory, automatic calibration and insulation performance.

Testing Equipment

① Comprehensive Electrical Tester: Measures rated voltage, relay load capacity and dielectric strength.

② Clock Precision Tester: Monitors long-term timing error to verify the effectiveness of weekly automatic calibration.

③ Aging & Vibration Test Bench: Simulates transportation vibration and long-time power operation to verify overall equipment stability.

Certification & Qualification

① The factory holds ISO9001:2015 quality management system certification with standardized full-process production control.

② Components comply with environmental standards. We assist customers in applying for CE and other export safety certifications and provide factory test reports.

③ Complete low-voltage electrical production qualifications and documents are available to meet domestic sales and overseas export audit requirements.

Production Process

① Pre-production: Raw material inspection , PCB soldering, Assembly of LCD modules, relays and other components.

② Assembly: Install PCB into housing, fit terminals and button panels to form semi-finished products.

③ Post-production: Power-on function test , Aging & vibration test, Appearance inspection and Sorting, packaging and warehousing.

Packaging & Delivery

① Standard individual color box packaging; neutral packaging, customized color boxes and carton printing are optional.

② Stable lead time for stock orders; lead time negotiable for ODM orders. Sea, air and land transportation are all available.

③ Export goods adopt reinforced shockproof & moisture-proof packaging to prevent damage from vibration and collision during transit.

Export Capacity

① Our products are exported worldwide. With years of experience in electrical product export, we are familiar with the entire customs clearance procedure.

② Complete customs documents including packing lists and test reports can be provided; mainstream trade terms such as FOB and CIF are acceptable.

③ The professional foreign trade team promptly replies to overseas technical inquiries and sample requests to ensure long-term stable supply.

FAQ

Q①：Will timing schedules and system time be lost after power failure?

A: The built-in lithium battery keeps the clock running; timing data and time are saved automatically without resetting. The standby service life of the lithium battery is up to 5 years.

Q②：How to calibrate the time and weekday?

A: Refer to Beijing Time; press the red CANCEL/RESUME button 4 times until the lock icon disappears, then adjust hour, minute and weekday separately. If the screen is off for first use, hold the red button for 5 seconds to turn on the display.

Q③：What is the adjustable range for cyclic timing and countdown?

A: The minimum unit is 1 second; both can be set from 1 second to 23 hours, 59 minutes and 59 seconds.

Q④：The load fails to activate when timing arrives, how to troubleshoot?

A: Confirm the timing group is enabled and weekday settings are correct; ensure the load current does not exceed the relay rated value, and check if terminals are tightly fastened.

Q⑤：How often does automatic time calibration run? What is the error range?

A: Automatic calibration runs once weekly, and the overall timing deviation is controlled within ±30 seconds after correction.