Very power-saving, 250 MA, the battery can work continuously for more than 40 hours; when the voltage is reduced from 9V to 7V, the detection range will not change.
Ukugcina amandla, i-250MA ibhethri elayishwayo ingasebenza amahora angaphezu kwama-40 ngesikhathi; lapho ibhetri ye-9V eya ku-7V noma kunjalo, ibanga lokuthola alishintshiwe;