A poster for display on the exits from the mental health unit into the hospital grounds is also available to remind users that it is against the law to smoke in the hospital grounds.
Mae poster hefyd ar gael i'w arddangos wrth allanfeydd yr Uned Iechyd Meddwl i dir yr ysbyty i atgoffa defnyddwyr ei bod yn erbyn y gyfraith i smygu ar dir yr ysbyty.