HS Code 91.07 – Time switches; with clock, watch movement or synchronous motor

HS code 9107 is a 4-digit heading in the Harmonized System that covers: Time switches; with clock, watch movement or synchronous motor. HS Heading 9107 specifically covers "Time switches; with clock, watch movement or synchronous motor." This classification is for devices whose primary function is to automatically open or close an electrical circuit at pre-set times or after a specified interval. These are not merely clocks that display time, nor are they time-recording apparatus; rather, they are control mechanisms that regulate the flow of electricity based on a timing function. The scope includes a wide array of applications, from domestic appliance timers to complex industrial process controllers and public utility switches. Whether mechanical or electronic, the defining characteristic is the integration of a timekeeping element (a clock, watch movement, or synchronous motor) to execute a switching action. Key sub-categories include programmable digital time switches, electromechanical timers, astronomical time switches (which adjust for sunrise/sunset), and various application-specific timers for lighting, heating, irrigation, or machinery. For trade compliance, distinguishing a time switch from a simple switch (8536) or a general clock (9105) is crucial, as misclassification can lead to incorrect duties and regulatory hurdles. This heading underscores the importance of precise timing in automation and energy management, falling under Section XVIII, which groups precision and control instruments, reflecting their sophisticated functionality in modern infrastructure and consumer products.

Programmable digital time switches, analog electromechanical time switches, street lighting timers, heating system timers, oven timers (built-in), washing machine timers, industrial process control timers, irrigation system timers, pool pump timers, security lighting timers, plug-in appliance timers, defrost timers for refrigerators, HVAC system timers, boiler timers, astronomical time switches (for dusk/dawn), staircase lighting timers, bell timers for schools, sauna timers, garage door opener timers, grow light timers, aquarium light timers, electric fence timers, vending machine timers, commercial sign timers, water heater timers.

Common misclassification errors for HS 9107 often stem from confusing time switches with other electrical apparatus or simple clocks. Traders might mistakenly classify a time switch under 8536 ('Electrical apparatus for switching or protecting electrical circuits') if they overlook the crucial 'time' element that governs the switching action, leading to incorrect tariff applications. Conversely, a simple clock that merely displays time might be erroneously placed here if it has a basic alarm function, instead of under 9105 ('Clocks, other, n.e.c.'). Additionally, if a time switch is part of a larger control panel or system, it might be incorrectly classified under 8537 ('Boards, panels, consoles for electric control') rather than as a distinct time switch component. The key differentiator is the primary function of controlling an electrical circuit based on a timekeeping mechanism.

In 2025, the top exporters of HS code 9107 in UN Comtrade data were China ($127M, 26% of world exports), Mexico ($91M) and France ($46M). World exports came to about $491M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 9107 in UN Comtrade data were the United States ($138M, 24% of world imports), Germany ($53M) and France ($37M). World imports came to about $564M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 9107 is a 4-digit heading under Chapter 91 of the Harmonized System. The first 2 digits (91) identify the chapter, and digits 3-4 (07) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.