The Teknetics Delta 4000 was introduced in 2008 and was discontinued in 2019. The Delta 4000 is a 7.69 kHz VLF metal detector aimed primarily at coin, jewelry, and relic detecting.
"The Delta has multiple Notch capability, one-touch Pinpoint Mode and numerical Target-ID for more precise target identification. It has Discrimination and All Metal Modes and an active on-screen bar graph depth indicator. Easy to use with more features than any other detector in its class." Source: Teknetics 2014 catalog
Teknetics Delta 4000 metal detector
Teknetics Delta 4000 control panel
- Multiple Notch system
- Real Time Depth Bar Graph
- Overload (large target) Alert
- Adjustable Discrimination and Sensitivity
- Pinpoint Mode with Numerical Depth Indicator
- Preset Ground Balance for turn-on-and-go operation
- Target Category Icons and Numeric Target-ID numbers
- Uses one 9V Alkaline battery (not included)
- 7.69 kHz Operating Frequency
- Weight: 2.3 lbs. (1.0 kg)
- 5-Year Warranty
Official Teknetics Delta 4000 Product Page
Teknetics Delta 4000 Owner's Manual
First Texas (Teknetics) Metal Detector Forum