Product classification
HS code for Timer switches: 9107.00
Time switches, with clock, watch movement or synchronous motor.
Classification of timer switches under HS 9107.00
Timer switches are classified under HS code 9107.00. This heading is unique because it sits at the intersection of electrical equipment and horology. It covers time switches with a clock or watch movement or with a synchronous motor. These devices are designed to automatically open or close electrical circuits at one or more predetermined times. The classification is determined by the integration of a time-measuring mechanism (the movement) with an electrical switching apparatus. This includes mechanical timers where a spring-driven clockwork triggers a switch, as well as electronic timers that use a synchronous motor or a quartz crystal movement to control the timing of the circuit. Because the timing mechanism is the defining feature of the switch's operation, the Harmonized System places these items in Chapter 91 (Clocks and watches) rather than Chapter 85 (Electrical machinery). This follows GRI 1, as the heading 9107.00 specifically describes this combined functionality.
- Covers
- Mechanical time switches
- Electronic timer switches with clock movements
- Industrial time-controlled relays
- Synchronous motor-driven switches
- Programmable time switches for lighting
- Also under 9107.00
- Intermatic T104 Mechanical Timer
- Theben TR 610 top2 Digital Timer
- Leviton Decora Smart Wi-Fi Timer
- Siemens LOGO! Time Switches
- Honeywell Home Programmable Thermostats (with integrated time switch)
Codes often confused with 9107.00
Common mistake. The most frequent misclassification is under HS code 8536, which covers general electrical switches and relays. While a timer switch does perform switching, the presence of a clock movement or synchronous motor mandates classification in 9107.00. Another error is confusing them with 9106 (time recorders), which record time rather than switching a circuit based on time.
Top exporters and importers of HS 910700 (the code used for timer switches), 2025
In 2025, the largest exporter of HS 910700 (the code used for timer switches) in UN Comtrade data was China, with 26% of world exports; the largest importer in UN Comtrade data was the United States, with 24% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 910700, not only timer switches.
Top exporters 2025 · share of world exports
- 1 China $127M 26% of world exports
- 2 Mexico $91M 18% of world exports
- 3 France $46M 9.3% of world exports
World total: $491M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $138M 24% of world imports
- 2 Germany $53M 9.4% of world imports
- 3 France $37M 6.6% of world imports
World total: $564M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for timer switches
Brazil splits HS 9107.00 into 2 NCM codes. Pick the one that matches your product:
- 9107.00.10Time switches
- 9107.00.90Other timers with clock or synchronous motor
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about timer switches
What is the HS code for Timer switches?
The HS code for Timer switches is 910700 (Time switches; with clock, watch movement or synchronous motor). The HS code for timer switches with a clock movement or synchronous motor is 9107.00.
How do I classify Timer switches for customs?
Timer switches is classified under HS code 910700 — Time switches; with clock, watch movement or synchronous motor. This is a 6-digit subheading level code.
Are simple delay relays classified here?
No, simple thermal or RC (resistor-capacitor) delay relays that do not contain a clock movement or synchronous motor are typically classified under HS code 8536.
Which countries are the top exporters of timer switches (HS 910700)?
In 2025, the top exporters of HS 910700 (the code used for timer switches) 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.
Which countries are the top importers of timer switches (HS 910700)?
In 2025, the top importers of HS 910700 (the code used for timer switches) 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.
Is the HS code for Timer switches the same in all countries?
The base HS code 910700 for Timer switches is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for timer switches in Brazil?
Brazil splits HS 910700 into 2 NCM codes, so the right one for timer switches depends on the product's details: 9107.00.10 (Time switches), 9107.00.90 (Other timers with clock or synchronous motor).