GGLABS GRAD Dual tube Geiger-Muller radiation counter ARDUINO SHIELD with tubes

Description

Ultra low power dual tube Geiger-Muller counter shield for Arduino. Listing includes two brand new J305 tubes.
Other 400V tubes can also be used, but mechanical fit might not be perfect.
Consumes less than 0.1mA @ 5V. The double tube feature can be used to increase the sensitivity (by using two tubes of the same type), to increase the range by using tubes with different sensitivities.
New v2 design with on board LEDs, speaker and connector for optional analog meter. Simple interfacing to Arduino. Uses 2 pins for pulses, 2 pins for LEDs, one pin each for speaker and analog meter. Open source HW design.
Open source SW for a complete USB logger is available for download.
Arduino not included in the listing.
We recommend Arduino Uno.
Board is also available without tubes at
this listing
WARNING
This is not a toy. While operating the circuit contains potentially lethal voltages.
Designed and assembled in USA with all new components.
Documentation and support available at gglabs.us
1 year warranty and 30 days money back (less shipping cost) if not satisfied
I will combine shipping for multiple items orders. Please request an invoice before submitting the payment.
International buyers are welcome.
Shipping Method
Tracking
Estimated Delivery
Refund/resend After
First class (USA)
Good
3-10 days
3 weeks
Priority Mail (USA)
Very Good
2-5 days
2 weeks
Priority Mail Express (USA)
Excellent
2-3 days
1 week
International Standard/First Class
Poor
2-6 weeks
8 weeks
International Priority Mail
Poor
1-3weeks
6 weeks
UPS/DHL International Express
Excellent
3-5 days
2 weeks