Cement resistors are manufactured by winding the ceramic rods with metal alloy resistance wire and put it in a fireproof ceramic box then concrete with non-flammable and heat-resistant cement.
1. Watt: 1W, 2W, 3W, 4W, 5W, 7W, 10W, 15W, 20W, 25W, 30W, 40W. 2. TOL: ± 5%. 3. Value range: 0.1Ω~100KΩ.