Double tightening detection provides highly reliable prevention of missed tightening (Pokayoke). The R-256FH receiver has been upgraded to the downward compatible R-CM. This upgrade offers New Telecommunication Mode to increase transceiving distance, and lets operators monitor transmitter battery voltage.
The wireless Pokayoke (error proofing) transmitter and receiver that are used to prevent missed tightening have been upgraded. Transmitter battery voltage can now be monitored, data transfer distance has been increased to about 20–30 meters, and battery life has been extended to about 650,000 times of use.