<p><b>Heater Specification:</b></p> <p>Power:100W</p> <p>Voltage: 110V</p> <p>Tank Capacity: 5~25 gallon</p> <p>Adjustable temp range: 68℉-93℉(±1℉)</p> <p>Wire 1: 67 in (from controller to heater)</p> <p>Wire 2: 47 in (from controller to plug)</p> <p><b>Package List</b>:</p> <p>1* 100W Aquarium Heater with Heater Protector</p> <p>1* External Temp Controller</p> <p>2* Suckers (for Heater)</p> <p>2* Fixing Tools (for controller)</p> <p>1* User Manual</p> <p>1* Package Box</p> <p><b>Notes</b>:1. For your safety and the best purchase experience, please carefully read and follow the instructions, and contact immediately if there is any issue.</p> <p>2. The whole body of heater must be fully submerged under water during working, but not buried in sand or mud.</p> <p>3. The controller must be NEVER placed in water.</p> <p>4. Before installing heater, please cut off all the devices in the aquarium.</p> <p>5. Unplug the heater and wait for AT LEAST 15 minutes to let it cool down before you remove it.</p> <p>6. It’s better to install the heater near where the water flow is strong to make the entire aquarium in the same temp.</p> <p>7. Please DO NOT use it if the wire or heater damaged.