What is Preheat
Preheat, in the context of the lighting industry, refers to the practice of applying a minimal amount of electricity to the filament or fixture of a lamp before fully powering it on. This technique is employed to enhance the lifespan of filament lamps and prevent thermal shock to the filaments. By preheating the lamp, it begins to emit a low-level glow, allowing it to reach the desired brightness more quickly when additional current is applied. As a result, the process of turning on the lights becomes smoother, avoiding the sudden “shock” of activating them from a cold state.
Looking For Motion-Activated Energy-Saving Solutions?
Contact us for complete PIR motion sensors, motion-activated energy-saving products, motion sensor switches, and Occupancy/Vacancy commercial solutions.
Preheating is particularly beneficial for incandescent lamps, especially in colder environments during winter months. By preheating the lamps to a low percentage of power, typically around 3%, before focusing starts, it helps to prevent lamps from blowing due to the cold temperature. This precautionary measure is also applicable to dimmable LEDs, as the internal components of these fixtures require a small amount of current to “wake up” before they can gradually fade up. Preheating with a low-level current aids in achieving a more gradual and seamless transition in the dimming curve of LEDs, preventing them from abruptly turning on.
Moreover, preheating can contribute to the longevity of traditional gels used in lights. By preheating the lights, it helps to extend the lifespan of these gels. Overall, preheating is a technique employed in the lighting industry to increase the lifespan of lamps, prevent thermal shock, and achieve smoother dimming curves. It involves applying a minimal amount of electricity to the filament or fixture before fully powering it on, ensuring a more efficient and reliable lighting experience.
Maybe You Are Interested In
- Load Current: 10A Max
- Auto/Sleep Mode
- Time delay: 90s, 5min, 10min, 30min, 60min
- Load Current: 10A Max
- Auto/Sleep Mode
- Time delay: 90s, 5min, 10min, 30min, 60min
- Load Current: 10A Max
- Auto/Sleep Mode
- Time delay: 90s, 5min, 10min, 30min, 60min
- Load Current: 10A Max
- Auto/Sleep Mode
- Time delay: 90s, 5min, 10min, 30min, 60min
- Load Current: 10A Max
- Auto/Sleep Mode
- Time delay: 90s, 5min, 10min, 30min, 60min
- Load Current: 10A Max
- Auto/Sleep Mode
- Time delay: 90s, 5min, 10min, 30min, 60min
- Occupancy mode
- 100V ~ 265V, 5A
- Neutral Wire Required
- 1600 sq ft
- Voltage: DC 12v/24v
- Mode: Auto/ON/OFF
- Time Delay: 15s~900s
- Dimming: 20%~100%
- Occupancy, Vacancy, ON/OFF mode
- 100~265V, 5A
- Neutral Wire Required
- Fits the UK Square backbox
- Voltage: DC 12V
- Length: 2.5M/6M
- Color Temperature: Warm/Cold White
- Voltage: DC 12V
- Length: 2.5M/6M
- Color Temperature: Warm/Cool White
- Voltage: DC 12V
- Length: 2.5M/6M
- Color Temperature: Warm/Cool White
- Voltage: DC 12V
- Length: 2.5M/6M
- Color Temperature: Warm/Cold White
- Occupancy mode
- 12V ~ 24V, 5A
- Neutral Wire Required
- 1600 sq ft
- Voltage: DC 12v/24v
- Day/Night Mode
- Time delay: 15min, 30min, 1h(default), 2h
- Occupancy, Vacancy, ON/OFF mode
- 100~265V 5A
- Neutral Wire Required
- Fits the US 1-Gang wall box
- Occupancy, Vacancy, ON/OFF mode
- 100~265V, 5A
- Neutral Wire Required
- Fits the US 1-Gang wall box
- Occupancy, Vacancy, ON/OFF mode
- 100~265V, 5A
- Neutral Wire Required
- Fits the European round backbox
- Occupancy, Vacancy, ON/OFF mode
- 100~265V, 5A
- Requires Hot wire, Load wire
- No Neutral/Ground Wire Required
- Fits the US 1-Gang wall box
- Occupancy, Vacancy, ON/OFF mode
- 100~265V, 5A
- No Neutral/Ground Wire Required
- Fits the UK square pattress box
English 
German 
French 
Spanish 
Portuguese 
Korean 
Indonesian 
Russian 
Arabic 
Japanese 
Turkish 
Italian 
Dutch 
Ukrainian 
Polish