Portable Digital Power VSWM (shipped without batteries)
Measure 125-525MHZ
Battery installation:
1. Remove the black screw and open the cover of the rear panel.
2. Can be used with alkaline or nickel-calcium, nickel-metal hydride rechargeable batteries.
3. This unit does not have a built-in charging circuit.
4. Be sure to correct the polarity of the battery.
5. If you are not using the unit for a long time, remove the battery.