{"product_id":"rhundo-rs-21s-3-way-car-lighter-splitter-with-2-usb-3-4a-touch-sensor-display-battery-protection","title":"RHUNDO RS-21S 3-Way Car Lighter Splitter with 2 USB 3.4A — Touch Sensor Display, Battery Protection","description":"\u003cp\u003e\u003cstrong\u003eThe RHUNDO RS-21S is a compact in-car power hub that converts one cigarette lighter socket into three switched outlets plus two 3.4A USB ports with a programmable touch-sensor display.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003ePacked with safety features and a programmable LED touch panel, the RS-21S keeps multiple devices powered and monitored without cluttering your dashboard. It displays battery voltage, USB output current, a configurable timer, and (optionally) temperature—while protecting your car with low-voltage cutoff, overload protection, and start-up delay. Built with memory for its switches and adjustable backlight brightness, this adapter is aimed at drivers who need organized, intelligent power management on the road.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the RS-21S manage multiple devices in a car?\u003c\/h3\u003e\n\n\u003cp\u003eThe unit turns a single cigarette lighter input into three independent lighter sockets plus two USB outputs, each controlled by touch switches so you only power what you need. That lets you run high-draw accessories (like dash cams or a portable fridge) alongside phone charging without constantly unplugging items.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThree controlled 12V lighter sockets for accessories.\u003c\/li\u003e\n  \u003cli\u003eTwo USB ports providing a combined 3.4A for phones and tablets.\u003c\/li\u003e\n  \u003cli\u003eIndividual touch-sensor switches to isolate or combine power loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat safety and protection features are included?\u003c\/h3\u003e\n\n\u003cp\u003eRHUNDO built the RS-21S with safeguards to protect both the vehicle battery and connected electronics. The adapter prevents deep battery discharge, delays startup to avoid inrush currents, and shuts off automatically when timers expire or if an overload occurs.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBattery Discharge Prevention \/ Low-voltage cutoff (adjustable between 11.0V–14.0V).\u003c\/li\u003e\n  \u003cli\u003eOverload protection and automatic power-off timers (1–120 minutes).\u003c\/li\u003e\n  \u003cli\u003eStart-up delay timer (1–30 seconds) to prevent surge issues at ignition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat does the touch sensor LED display show and how is it useful?\u003c\/h3\u003e\n\n\u003cp\u003eThe front panel shows four selectable readouts: car battery voltage, USB output amperage, a countdown timer, and (if you add a temperature probe) cabin or device temperature. The touch interface also remembers switch states and offers nine brightness levels for night or day driving visibility.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVoltage readout helps monitor vehicle battery health at a glance.\u003c\/li\u003e\n  \u003cli\u003eUSB amp display confirms charging rates for connected devices.\u003c\/li\u003e\n  \u003cli\u003eProgrammable brightness and power-state memory for convenience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho should consider the RHUNDO RS-21S?\u003c\/h3\u003e\n\n\u003cp\u003eThis adapter suits drivers who frequently use multiple powered accessories—commuters, rideshare drivers, campers, and anyone running dashcams, heated seats, fridges, or phone chargers at once. If you value neat cable management, extra protection for vehicle electronics, and a clear display for monitoring power usage, the RS-21S provides a professional, feature-rich solution without complicated installation.\u003c\/p\u003e\n\n\u003cp\u003eDesigned in Korea by stylistic automotive engineers and sold under RHUNDO, the RS-21S balances smart features with safety. It’s ideal when you need reliable, switchable power in a single compact module that blends into a modern car interior.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the RS-21S prevent draining my car battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It includes a low-voltage cutoff (11.0–14.0V adjustable) and battery discharge prevention to stop deep discharge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the unit remember which switches were on?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Both the master and individual touch switches retain their previous ON\/OFF state when power is restored.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RHUNDO","offers":[{"title":"Default Title","offer_id":55171453518167,"sku":"B07BR5DR9F","price":62.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/rhundo-rs-21s-front-panel.jpg?v=1790445959","url":"https:\/\/britishgarage.co.uk\/products\/rhundo-rs-21s-3-way-car-lighter-splitter-with-2-usb-3-4a-touch-sensor-display-battery-protection","provider":"British Garage","version":"1.0","type":"link"}