Quarterly report pursuant to Section 13 or 15(d)

Schedule of Deferred Revenue (Details)

v3.21.2
Schedule of Deferred Revenue (Details) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Total $ 1,623,000 $ 331,000
0-12 Months [Member]    
Total 1,517,000 169,000
13-24 Months [Member]    
Total 71,000 84,000
Over 24 Months [Member]    
Total $ 35,000 $ 78,000