100W Slot-Mounted Digital Aquarium Heater for M1 Smart Tank | Auto Shut-Off & Overheat Protection, 64-94°F One-Degree Control, Slot-In No Suction Cups, Made for M1

Made for M1. Installed in Seconds.If you've kept tropical fish, you've been there — suction cups that lose grip, cords that push the lid open, a glass tube floating awkwardly where it doesn't belong. Generic heaters are a universal headache. This one isn't.Designed exclusively for the Jengu M1 Smart Tank, it slides directly into the pre-built back chamber slot, sits flush, and plugs in. No suction cups. No exposed glass. No daily annoyance.Because this heater is built exclusively for the M1, safety is designed into the tank itself. The M1's minimum and maximum water level lines both sit below the display by design — so the heating body stays fully submerged while the top controls and digital display remain safely above water, with no guesswork and no risk of submersion.The moment you power it on, the display lights up with your target temperature. Press the button once to raise the setting by 1℉, or hold to scroll quickly through the full range of 64–94℉ — the ideal zone for tropical fish. Even tropical species can't handle rapid temperature swings; the built-in probe ensures the water warms at a gradual, measured pace, avoiding sudden spikes that stress delicate fish.100 watts, perfectly sized for the M1's 5-gallon volume, delivers the heating capacity needed to hold warmth through cold winter nights when room temperatures dip.The display shows your set temperature, not live water temperature. For daily monitoring, a small stick-on thermometer pairs perfectly — most users find actual tank temperature stays within 1-3 degrees of the setting once stabilized.Safety shaped every decision inside. A water flow sensor works alongside the temperature probe to constantly monitor conditions. Water drops too low during a change? Power cuts instantly — no dry burn, no cracked glass. Temperature creeps past 96℉? The overheat protection shuts everything down and won't restart until the water cools back to safe range.A full-length protective guard wraps the heating element. Inside the M1's back chamber — where the slot material is neither metal nor glass — the guard prevents direct contact between the hot heating body and the chamber walls, protecting your tank's internal structure from heat damage. During maintenance or cleaning, it also shields your hands from accidental burns when handling the heater.What you get: 1 Jengu 100W Digital Heater with integrated guard, pre-fitted for the M1 Smart Tank — plus a quick-start guide with installation steps and temperature-setting instructions.Every heater leaves our facility tested. If yours ever fails — error codes, heating issues, protection modes tripping for no reason — contact us. We'll send a replacement. No return, no runaround. Just a working heater where it belongs: tucked neatly into your M1, keeping your fish warm, silent, and out of sight.

• Designed exclusively for the Jengu M1 Smart Tank — this 100W heater slides directly into the pre-built back chamber slot; no suction cups, no adjusting, no guessing placement, just insert and plug in
• When the M1's water level drops below its minimum line, the built-in flow sensor cuts power automatically, protecting the heater during water changes. And if the water temperature exceeds 96℉, the overheat protection shuts everything down instantly and won't restart until it cools to safe range — keeping tropical species like bettas, guppies, and tetras safe from dangerous spikes
• Set your temperature with one click per degree: press the button on top to raise the setting by 1℉, or hold to scroll quickly through the full range of 64–94℉ — the ideal zone where tropical fish thrive
• The heater slot is positioned right next to the M1's pump compartment, so the tank displays real-time water temperature while the heater's own display shows your set temperature. Due to the time required for heat transfer and the aquarium's natural heat dissipation, a difference of 1.8–5.4°F between the set temperature and the actual water temperature is normal
• 100 watts, perfectly sized for the M1's 5-gallon volume — delivers the heating capacity needed to hold warmth through cold winter nights when room temperatures dip, keeping your fish stable and stress-free
• What you get: 1 Jengu 100W Digital Heater with integrated guard, pre-fitted for M1 Smart Tank, plus a quick-start guide. During normal use, if you encounter error codes, heating issues, or unexpected protection mode triggers, contact Jengu customer support — we provide 24/7 assistance
• Important: this heater is purpose-built for the Jengu M1 Smart Tank. The top digital display is not waterproof. If you choose to use it in any other setup, you must secure the heater so the display stays above water at all times — submersion will cause a short circuit and damage the unit