The speaker shall be a splash-proof surface-mount broadcast unit suitable for ceiling installations where built-in ceiling speakers cannot be installed. Installation to an electrical box shall be possible. The speaker shall reproduce clearly audible vocal and smooth sound for easy-to-hear broadcasts in such locations as rooms with high humidity, under eaves and connecting corridor. The speaker component shall be a waterproofed 12 cm (5") cone-type speaker. Rated input shall be 6W for a 100V line application, and 3W for a 70V line application, with changes made by switching the transformer tap position (6W, 3W, 1.5W, 0.8W at 100 V and 3W, 1.5W, 0.8W, 0.4W at 70V). Speaker connection shall be by a push-in connector with a bridging terminal. The sensitivity at a distance of 1m with a 1W input level applied shall be 90dB. The speaker shall have a frequency response of 160 – 16 kHz. The speaker shall have a splash-proof rating of IPX4. Accessory speaker mounting panel shall enhance the speaker's splash-proof performance. The speaker shall have an operating temperature of -10° C to +50° C (14° F to 122° F). The speaker enclosure shall be front and rear cases of light-gray fire-resistant HIPS resin, with locking rotational closure. The design shall blend well with any architectural decor. Dimensions shall be ø220 x 80.5 (D) mm (ø8.66" x 3.17"). Weight shall be 890g (1.96 lbs.).Screws for ceiling-mount and switch-box-mount and knob nuts shall be available. The splash-proof surface-mount speaker shall be TOA model PC-2268WP.