Shanghai Jastar Industrial Co., Ltd.
Instant · Dual outlet 3,500 W 110 / 220 V 25 – 55 °C OEM / ODM

3.5 kW Instant Electric Water Heater — Dual Outlet for Basin and Shower, 25–55 °C

A point-of-use heater that feeds a basin and a shower from one unit. The stainless steel tube element heats on demand, a rotary knob sets the flow so the outlet holds 25–55 °C, and water stays separated from electricity — no scale, no waiting. Shower set and basin spout are in the box.

Model
GB-1
Rated power
3,500 W
Voltage / Frequency
110 / 220 V ~ · 50 / 60 Hz
Heating element
Stainless steel tube, 3.5 kW
Hot water in
≈ 3 seconds
Temperature range
25 – 55 °C
Control
Rotary water-flow control
Unit size
250 × 80 × 135 mm
Carton
24 pcs · 21 kg

MOQ 100 pcs for custom panel colour, pattern and logo · 1,000 pcs for custom packaging. Samples from 1 pc — the sample price is higher than the bulk price, and we refund the difference once you place a bulk order within 30 days of receiving the sample. Prices are quoted per order, EXW Shanghai — tell us your quantity and destination port and we will reply within one working day.

CE RoHS 100% tested before shipment

Why this model

One heater for the basin and the shower

Three things buyers check first on a point-of-use unit — all covered without adding cost.

Dual outlet, one unit

Dual outlet, one unit

Feed a basin and a shower from the same heater. A single knob switches the outlet, and the set ships with the shower head, hose and basin spout — the installation is complete out of the carton.

Shower set and spout included

Shower set and spout included

Shower head, flexible hose, wall bracket and basin spout are inside the box. Plug standard EU / US / UK / AU / Africa to order, cable length matched to your market.

Hot water in about three seconds

Hot water in about three seconds

The stainless steel tube element heats only while water flows — nothing is stored, nothing runs cold, and the 25–55 °C outlet stays where you set it.

Small footprint for retrofit work

Small footprint for retrofit work

250 × 80 × 135 mm and 21 kg for a carton of 24. A compact unit for apartments, guest houses and projects where the wall space is already fixed.

Specifications

Technical data — GB-1

Every unit is pressure-tested and function-tested before packing. Custom panel finish and power connection available for OEM orders.

Electrical & performance
ModelGB-1
Product typeInstant electric water heater (point-of-use)
Rated power3,500 W
Rated voltage110 / 220 V ~ · 50 / 60 Hz
Rated frequency50 / 60 Hz
Heating elementStainless steel tube, 3.5 kW
Heating time≈ 3 seconds
Temperature range25 – 55 °C
ControlRotary water-flow control
ProtectionWater–electricity separation · multi-level protection
Waterproof ratingIPX4
Power cable≥ 2 mm² copper core
Power connectionPlug standard to order (EU / US / UK / AU / Africa)
CertificationCE · RoHS
Water, dimensions & packing
Unit size250 × 80 × 135 mm
Inner box250 × 100 × 190 mm
Pcs per carton24 pcs
Carton size610 × 510 × 395 mm
Gross weight21 kg
Body colourWhite (custom on request)
LoadingLCL and FCL both available

OEM & ODM

Make it your own brand

We build for importers, wholesalers and own-brand retailers — from a panel colour change to a fully customised product and gift box.

Panel colour, pattern & logo

Body colour and front panel in your colour and pattern, with your logo printed or laser-etched. Artwork proof before mass production.

MOQ 100 pcs

Packaging

Custom printed inner box and master carton, colour or gift box, barcode and retail labelling. Export cartons are drop-tested.

MOQ 1,000 pcs

Power connection

Plug standard (EU / US / UK / AU / Africa) and cable length matched to your market. Shower set included or optional as listed above.

No extra MOQ

Documents & certification

CE and RoHS test reports, product photos, specification sheets and packing lists for your own listings and customs clearance.

Ready to share

Samples & price protection

Test one unit before you commit to a container

Every model is available as a sample, and every price step you reach is paid back to you — the sample itself included.

Samples from 1 pc

Order a single unit to test it, open it up and show your own customers. No minimum quantity, any model in the range, shipped with its CE and RoHS test reports.

MOQ 1 pc

The sample price difference comes back

A single unit is charged above the bulk price, because of one-off handling and air freight. Place a bulk order for the same model within 30 days of receiving the sample and we refund the difference.

30-day rebate

Earlier shipments are rebated too

Our four price tiers — 10–99 / 100–999 / 1,000–9,999 / 10,000+ pcs — are counted cumulatively over the 30 days after you receive the goods. Reach a higher tier and we refund the difference on the units you have already shipped.

Cumulative over 30 days

Tell us which model you want to test and we will send the sample invoice the same working day.

Request a quotation for GB-1

Send us your quantity, destination port and power connection requirements — we will come back with prices and lead time within one working day.

Product Catalog 2026

Browse the full range — instant water heaters, hot water taps and bathroom & desk heaters — in one PDF.