Suitable for use in: Panasonic KX-FC-231 Panasonic KX-FC-233 Panasonic KX-FC-235 Panasonic KX-FC-238 Panasonic KX-FC-241 Panasonic KX-FC-243 Panasonic KX-FC-245 Panasonic KX-FC-248 Panasonic KX-FC-378 Panasonic KX-FC-379 Panasonic KX-FC-392 Panasonic KX-FP141 Panasonic KX-FP142 Panasonic KX-FP143 Panasonic KX-FP145 Panasonic KX-FP146 Panasonic KX-FP148