pos/pos_jsprintmanager/models/pos_config.py

from odoo import models, fields


class PosConfig(models.Model):
    _inherit = 'pos.config'

    use_jsprintmanager = fields.Boolean()
    jsprintmanager_default_receipt_printer = fields.Char(
        string='Default Printer for Receipts',
        help='Enter the name of the default printer to be used in receipts')
    jsprintmanager_output_format = fields.Selection(
        string='Printer output format',
        selection=[
            ('normal', 'Normal'),
            ('escpos', 'ESC/POS')
        ],
        help='Enter the format used by the printer')