... Height adjustable optical high-definition square land magnifier with lamp SUMMARIZEMagnifier series are LT-86A,LT-86B,LT-86C ... D), 14W(2×7W)U shape fluorescent lamp (Type F, G, H, I) , 22W(A, B, C, E). Its ... . After you turn on the power, the lamp will warm up around 1.5 second and the ... whether the lamp is under a normal working ( 22W lamp impedance is 5Ω, 12W lamp impedance is 10Ω,7W lamp impedance is ...