Atik retounen yo pral aksepte nan 40 jou depi dat resepsyon machandiz yo. Atik pèsonalize pa ka retounen oswa echanje. Atik achte ak yon kat kado elektwonik ka echanje sèlman; rembousman yo pa aplikab.
Kado gratis
Byenveni nan Roymall, sit entènèt pwofesyonèl ou pou achte kado depatman magazen prim. Nou valè ak apresye sipò ou, epi nou vle eksprime rekonesans nou an nan ajoute yon touche eksitasyon siplemantè nan acha ou yo. Lè w ap fè makèt avèk nou, ou pa sèlman jwenn pwodwi ki gen bon jan kalite ki amelyore fòm ou, men ou pral resevwa tou yon kado gratis eksklizif ak chak lòd ou fè. Ou pare pou eksplore koleksyon nou an epi jwenn kado pafè ou yo? Parcou seleksyon nou an nan atik depatman magazen prim, fè lòd ou, epi tann eksitasyon kado gratis ou a ki rive ansanm ak acha ou.
Règleman livrezon
Nou pral travay di pou livre atik ba ou apre resevwa lòd ou yo epi asire yo rive an sekirite. Detay livrezon yo pral bay nan imèl konfimasyon ou.Nan pifò ka, lòd yo trete nan 2 jou.Nan sikonstans espesyal, li pral retade jan sa a: Lè ou fè yon lòd samdi, dimanch oswa jou ferye, li pral retade pou 2 jou..Nòmalman, li bezwen 5-7 jou ouvrab (lendi a vandredi) san yo pa afekte pa reta vòl oswa lòt faktè anviwònman..Paske sèvis livrezon nou an se mondyal, tan livrezon yo pral depann de kote ou ye kidonk li ka bezwen kèk tan epi tanpri rete pasyan si ou nan distri oswa peyi aleka.
1. Règleman Retounen & Echanj
Nou sèlman aksepte atik achte sou roymall.com. Si ou achte nan distribitè lokal nou yo oswa lòt revandè, ou pa ka retounen yo sou bò nou.Atik lavant final oswa kado gratis yo pa akseptab pou retounen.Pou kalifye pou yon retounen, atik ou a dwe itilize epi nan menm kondisyon ke ou te resevwa li. Li dwe tou nan anbalaj orijinal la.Apre resevwa enstriksyon retounen nan men nou, tanpri anbalaje atik retounen ou yo epi depoze pake ou a nan biwo lapòs lokal la oswa yon lòt kurye. Nou pral trete atik retounen oswa echanj ou a nan 3-5 jou ouvrab apre nou resevwa li. Rembousman an pral trete ak kredite otomatikman nan metòd orijinal ou a nan peman.Pa gen retounen oswa echanj ka aksepte si pwodwi a te pwodui koutim, ki gen ladan gwosè koutim, koulè koutim, oswa enprime koutim.Bezwen plis èd, tanpri kontakte nou. service@roymall.com oswa Whatsapp: +447549870296
2.Règleman Rembousman
Ou pral jwenn yon rembousman konplè oswa 100% kredi magazin apre nou resevwa pake retounen an epi verifye li. Rembousman an pral trete ak kredite otomatikman nan metòd orijinal ou a nan peman.Tanpri sonje ke frè livrezon ak nenpòt dwa oswa frè yo pa rembousab. Frè livrezon siplemantè yo pa rembousab yon fwa pake a te anbake. Ou responsab pou peye frè sa yo epi nou pa kapab egzante oswa rembouse yo, menm si lòd la retounen tounen vin jwenn nou.Yon fwa nou resevwa ak konfime atik retounen ou a, nou pral voye yon imèl ba ou pou fè ou konnen ke nou te resevwa atik retounen ou a. Nou pral tou fè ou konnen apwobasyon oswa rejè rembousman ou.Si ou gen nenpòt pwoblèm konsènan pwosesis rembousman an, tanpri kontakte nou. service@roymall.com oswa Whatsapp: +447549870296
Videos for similar product
Loading product videos...
❮
❯
Products related to this item
Loading related products...
❮
❯
Features:
1. Adopt new imported chips.
2. The maximum output current is 3A, running 2.1A for a long time, and the surplus is sufficient. 3A runs for about 20 seconds and the chip enters the overheat protection and restarts. It can work at 3A current by cooling and cooling the chip.
3. Using a new design scheme, the circuit design does not need electrolytic capacitors and tantalum capacitors (electrolytic capacitors have short life, tantalum capacitors are in danger of explosion). Three large-size solid-state ceramic capacitors (MCC) are used in high-end circuits.
4. Using non-isolated DC synchronous rectifier, the circuit conversion efficiency is very high. The efficiency is 97.5% at 6.5V to 5V 0.7A and 94% at 12V to 5V1A.
5. The use of integrated inductance, low internal resistance, greatly improve the conversion efficiency. It reduces calorific value and improves efficiency, and has lower calorific value than common shielded inductor.
Note:
1. In the case of low static current, 12V input and output 5V voltage, and strip LED lamp indicator, the static current is less than 0.45 mA.
2. Connecting to car batteries without switching, can be on the cigarett lighter line, or on the ACC power wire.
3. Output integration can be adjusted and fixed voltage. Fixed output is not customized. It can be directly spot-welded on the board. Special voltage can be regulated by potentiometer. It is very versatile.
4. Output with LED light indication, convenient and intuitive indication with voltage output.
5. With enabling ports, the default mode of operation is low-level shutdown, which brings convenience to control.
6. Can be used to replace 78 series linear regulators, such as 7805 7812 and so on.
Specification: Input voltage: DC 4.5-24V
Output current: 3A
Conversion efficiency: 97.5%
Switching frequency: 500Khz
Output ripple: 20mV
Load adjustment rate: +1%
Voltage adjustment rate: 0.5%
Dynamic response speed: 5% 200uSSize: 18 x 10 x 3.8mm
Package included: 1 x Mini DC-DC Adjustable Step Down Power Supply
Roymall C.o.
Kado gratis
Règleman livrezon
Règleman retou
Coupon Code
Direct purchase from the factory 
Electronic Components & Supplies
Module Board
Power Supply Module
