Kruta BT18433/BT28433 BT184342 BT284342 BT1011 BT-1011 800mAh 2.4V Replacement Cordless Phone Battery Compatible with CS6209 CS6219 CS6229 DS6151 89-1330-01-00 CPH-515D Pack 2 Size:Pack 2 To make it be RS232

To make it be RS232 output

or kitchen wall

Receiver sensitivity at40KHz (0dB = V / ubar): -75dB

Phone 6/6 Plus

Kruta BT18433/BT28433 BT184342 BT284342 BT1011 BT-1011 800mAh 2.4V Replacement Cordless Phone Battery Compatible with CS6209 CS6219 CS6229 DS6151 89-1330-01-00 CPH-515D Pack 2 Size:Pack 2 To make it be RS232Kruta BT18433 BT28433 BT184342 BT284342 BT1011 BT 1011 800mAh 2. 4V Replacement Cordless Phone Battery Compatible with CS6209 CS6219 CS6229 DS6151 89 1330 01 00 CPH 515D Replace of the original battery part numbers: BT 18433, BT 28433, BT 184342, BT 284342, BT 6010, BT 8000, BT 8001,BT 8300, BATT 6010, BT184342, BT284342, 89 1326 00 00, 89 1330 01 00 CPH 515D Compatible with the following cordless phone models: AT&T: CL74209, CL74309, CL80109,