Utility Locators
Using the correct frequency makes a world of difference when locating buried utilities — depth, size, material and congestion all factor into the right choice. The VM-810 and VM-850 give you two focused options, each with sonde modes to help locate non-metallic pipes and ducts.
The VM-810 operates at 83.1 kHz, ideal for water and gas utilities — larger pipes with bell housings and gaskets — and for ungrounded small-diameter drop wires or inducing signal through the soil where direct connection is not an option.
The VM-850 operates at a much lower 9.82 kHz, ideal for smaller-diameter utilities such as CATV, power and telephone, with less signal bleeding onto adjacent services. Both feature distance-sensitive Left/Right Guidance, automatic gain, and a clear depth and current readout.
| VM-810 frequency | 83.1 kHz (83,077.5 Hz) |
|---|---|
| VM-850 frequency | 9.82 kHz (9,820 Hz) |
| Display | Black & white TFT 2.7 in WQVGA (400 x 240 pixels) with backlight |
| Output connector | 3-pin XLR socket |
| Receiver power | 2 x D alkaline; VM-810 Tx 6 x D alkaline, VM-850 Tx custom Li-ion |
| Battery life | Receivers ~65 hrs; VM-810 Tx ~60 hrs, VM-850 Tx ~40 hrs |
| Construction | High-impact ABS with retractable aluminum antenna tube |
| Weight | Receiver 3.1 lb (1.4 kg); VM-810 Tx 2.95 lb, VM-850 Tx 4.1 lb |
| Dimensions (receiver) | Collapsed 22 in; extended 31.1 in (560-790 mm) |
| Warranty | 12 months (receiver and transmitter) |
Interested in the VM-810/850?
Request pricing, availability, or a hands-on demo from our team.
